Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7562d9d9a4f375…

MALICIOUS

PDF

88.0 KB Created: 2021-07-16 00:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ca3e78d5c195565c16e610dd8def1c81 SHA-1: bcd67403a30962f5e5b4d848168e555e75d35f9e SHA-256: ba7562d9d9a4f375b122a5cfaa97e56fb1b9203fdcdb3848d09fedd1884a4eb0
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple URLs pointing to compromised WordPress sites, suggesting a link farm used for distributing malicious files. The presence of a 'download button' lure and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://allytemp.ru/uplcv?utm_term=far+cry+4+free+download+torrent PDF link annotation
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/537145612d4344b175fa0a8199deb649/61158151675.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609774c972c8a---ziwezatazalegaxosugo.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa86c82166a---32780299115.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f03069101b---81036473391.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/f7ec45260bc2a8d802a0e876d8846cb5/96250909592.pdfIn PDF document text
    • http://boathousebrokerage.com/userfiles/file/werotarapubizejav.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/l66kikhl4so0fsdgu3kj2no21a/romodobevo.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/b963b34fd35ddddb97fe916d8ac8e3b2/virefotosasedopirete.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c21fc0c2912---zogupuva.pdfIn PDF document text
    • http://valkexclusief.reviews/app/webroot/files/userfiles/files/56311694883.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc86cbeaa3---zeferevuz.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16083e617316d5---japasimurufazix.pdfIn PDF document text
    • http://curtisfamilyfun.net/clients/e/e0/e02f67ab5b6879a7eb6c21a3163f7106/File/90705784898.pdfIn PDF document text
    • http://school19-zav.ru/userfiles/file/36596028175.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/h39bihsugba16hfluu3hijkkn4/46243518954.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16072c534917b4---56479221150.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/2e91f77e16666aeeabea26df0dab1cc0/65798594994.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/deb598160ef0d999a0344772b1db65ff/sedadal.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/m21p1usf5qred8t5mgmv08i8se/kusuga.pdfIn PDF document text
    • http://1960vonsteuben.com/clients/d/df/dfb5e1b83ea85bfdc5ef1da934264264/File/99444716456.pdfIn PDF document text
    • https://whitesal.com/data/images/file/5113_20210622161415.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/92031666768.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff6c819760---xozasivomuzoriloxiguluge.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/ropejakokovef.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AA 17504 bytes
SHA-256: ff08a381466475a0f07a6868201b425cf8b863ea884a7d468cf8d1d7bbef1679
font_01_sfnt_off000122aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122AA 10464 bytes
SHA-256: 20bfec5128ebf543e3b17edb3f47bee8cf0574c0dfc37e78b460ebf8b26fd335
font_02_sfnt_off00013ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.