PDF malware analysis — malicious · 6036a8c2319978a2

MALICIOUS

PDF

99.5 KB Created: 2021-07-22 05:04:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: b0e244c161441b62e90d534dc58ee9d2 SHA-1: 4bad0e981e31eaccff8f5078fd6a67681709c291 SHA-256: 6036a8c2319978a254ef7cee1f206f6b0ce4aff1de481f1a78a69d38bfb1ec31

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories, suggesting an attempt to lure users to malicious content. No scripts were extracted, but the presence of multiple suspicious URLs indicates a phishing or redirection attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9690

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c66d9e58b---20207583417.pdf In PDF document text
- http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c551699a278---10541139968.pdfIn PDF document text
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607327bc930dd---juruxomi.pdfIn PDF document text
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c9523a7a6eb---28431380542.pdfIn PDF document text
- http://otelm4b.ru/admin/ckfinder/userfiles/files/texum.pdfIn PDF document text
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606ea0bcb0da9---vugemoxuziveri.pdfIn PDF document text
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d51432928d8---37586295813.pdfIn PDF document text
- http://msinziniering.com/userfiles/file/levolakikesetuxinewegode.pdfIn PDF document text
- https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/f78b043bgmb7k2tonb3fvpkn3b/66483555432.pdfIn PDF document text
- https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/4a4f560e1a2fab6e288a27c470facb0e/wejilamesukifo.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c2bfedd6c10---17466442693.pdfIn PDF document text
- https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/39dcfcc3271ac1831dac2e21815fbb84/duwupovupokerobefularijox.pdfIn PDF document text
- https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/16093fbbada624---lebefawomijenakezol.pdfIn PDF document text
- https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a37fdffd5---pojafenadivuvozezi.pdfIn PDF document text
- http://kwartetproforma.com/userfiles/file/72513545740.pdfIn PDF document text
- http://ashole.hu/UserFiles/File/duwubexuzidodaforulaj.pdfIn PDF document text
- http://azizolace.cz/images/file/tadulawemenitazurow.pdfIn PDF document text
- http://ateliergermain.net/sites/default/files/file/50275451813.pdfIn PDF document text
- http://appinaris.net/ckfinder/userfiles/publics/files/zaseranizenama.pdfIn PDF document text
- https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/rq04q7h78kv28o2n2825ml9qq8/39564104341.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607276975321b---711176813.pdfIn PDF document text
- https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/9a9f22394b40ce00f3f825b21a86ea8b/84931334351.pdfIn PDF document text
- http://sun-tes.ru/files/file/57534307115.pdfIn PDF document text
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607589a0ace42---74564734017.pdfIn PDF document text
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/8a15c6f60f15e366f5984ae881488ba5/wiledavaxes.pdfIn PDF document text
- https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080216658ad4---domajusox.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=gta+vice+city+rage+with+cryenb+ultra+realistic+graphics+4k+downloadPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f1fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1FD	1792 bytes
SHA-256: `2bc34a491335b2f5b24488560cbbb690873913e9c053901046f4ab4054106069`
`font_01_sfnt_off0000fa79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA79	11508 bytes
SHA-256: `6a36f7628c2d49ff92446553bec242c7107a07119235b5d2eac37bee6da2f6d0`
`font_02_sfnt_off0001155f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1155F	16312 bytes
SHA-256: `7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae`
`font_03_sfnt_off00012b66.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B66	23420 bytes
SHA-256: `a4521903343746d840329622df4cddacbc7468dd66820e2c4c3ccb6814cb00b1`
`font_04_sfnt_off000164cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x164CC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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