PDF malware analysis — malicious · 7e0d9d704cd68bf5

MALICIOUS

PDF

85.5 KB Created: 2021-09-03 01:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 9aab93a3042520dd8cf87f0a6c4bd7b2 SHA-1: f3c297f42f8cf8b1796465dd206a10604a718c6b SHA-256: 7e0d9d704cd68bf54212ed7e79d3332c9e7236c20e22311c2c429c34e5b0484b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm or phishing lure. The presence of embedded JavaScript, though not directly analyzed here, is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 6

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.
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://stuarteisbrucklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tipukova.pdf In PDF document text
- https://ludifrance.fr/userfiles/file/mebaka.pdfIn PDF document text
- http://mamitobe.ru/files/file/fuvomanefolujetumujamodid.pdfIn PDF document text
- http://lovec.bg/root/ckfinder/userfiles/files/tazunerudokamizatomosefut.pdfIn PDF document text
- http://hoangnamjsc.com/upload/files/basukitubukulapolivura.pdfIn PDF document text
- https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/cc7vq9ifadge3nq35bsj4jpt6q/jixipugemese.pdfIn PDF document text
- http://americanpetrochemicals.com/customers/CMS-IMAGES/file/10860879643.pdfIn PDF document text
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/c567c93e531899ce701cdcc5f51a07aa/23142404087.pdfIn PDF document text
- http://criollo-cocoa.com/userfiles/file/diruwuxapafetigifowovomar.pdfIn PDF document text
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928a2c28c17---66186612335.pdfIn PDF document text
- https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/h0au2i9k24ufllhaje4k6pb044/4814106740.pdfIn PDF document text
- https://tenutaedone.com/filesUploads/file/tiwutegegi.pdfIn PDF document text
- https://suacuasathcm.com/uploads/files/vesijejusatedinelo.pdfIn PDF document text
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb63ed1da0b---41978327640.pdfIn PDF document text
- https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/a15149ab6006b6efba8f8f0b7c4d33ca/574997810.pdfIn PDF document text
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160970f52eb1a4---tilodisisoj.pdfIn PDF document text
- http://hacoauto.vn/upload/files/1799903666.pdfIn PDF document text
- https://kuni.ro/app/webroot/files/userfiles/files/1961661902.pdfIn PDF document text
- http://elyriahigh1974.org/clients/0/05/052ab20d644b737728595af1a47b4450/File/mutozo.pdfIn PDF document text
- http://techscreening.com/userfiles/files/50629558365.pdfIn PDF document text
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16123c7546b45b---fekovilinojakifemufatedu.pdfIn PDF document text
- https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/b968c0e97370481b657b389e523213d0/17056126212.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16110a8abe2835---55014269715.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/0c6aba0729eb22f66f77383e38baea52/50841173382.pdfIn PDF document text
- https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2737d83f91fe0d2c137ed4ace6cc3389/46437120142.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=oliver+twist+book+pdf+oxfordPDF 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e7ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7FF	17612 bytes
SHA-256: `ad18883642c8dfb55bea18f3231a3109e3b6091018840a169a35ae32ea4c357b`
`font_01_sfnt_off0001159a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1159A	10736 bytes
SHA-256: `91a3fc427eb84f04a89aff5e535b54c5ab8e00e689ad6c78350ebae6d52c5a27`
`font_02_sfnt_off00012e4d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E4D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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