Malicious PDF — malware analysis report

Static analysis result for SHA-256 39895216f5886077…

MALICIOUS

PDF

81.3 KB Created: 2021-09-06 12:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0adf51e4a49b41e6c424820801fb0b4a SHA-1: 28279076e99afbb068b8ee9599753627f5b9e118 SHA-256: 39895216f5886077f475d3948abd4965519ccad57666a668fc479d70f46b083e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous external URLs, many hosted on compromised WordPress sites or disposable domains, designed to lure victims with promises of prizes or funds. The document's structure and embedded links strongly suggest a phishing attempt to defraud users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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 https://pixomot.ru/uplcv?utm_term=presentation+skills+books+pdf
    • https://www.cascatai.com.br/ckfinder/userfiles/files/lepusenasuxuzowikipeze.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/a929c73p95lo6iv9l796r5sid7/lezisasizejituwe.pdf
    • http://utpcomp.ru/uploads/files/56403829658.pdf
    • https://brune-schmuckwerk.de/ckfinder/userfiles/files/8789572039.pdf
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/787277q39cmcouoj0u9cjpke1p/50522973576.pdf
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/160970ce29bdd8---77651101686.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608332becb98b---56697710546.pdf
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b588c15f8bf---sawamibajuweriz.pdf
    • http://pk.mo/userfiles/file/511199578.pdf
    • http://busankid.com/webfiles/board/file///powawobofu.pdf
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/3aqgn4p0kbtl4q7onm7fiqk1s3/92226729047.pdf
    • https://aedwea.com/upload/foto/bepemikuwilupasufiwetaxum.pdf
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/vae6dhd5d3vv2ol0v27i3dnh5a/69018892458.pdf
    • http://cmtsport.com/pliki/ginexexod.pdf
    • http://prttour.ca/FileData/ckfinder/files/20210905_3096BF8B5D3583C6.pdf
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804678632cd---tuvemixamopetewevilureje.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/d407b12ccf5849ec66fc5348dddc9d71/xodudezadapaledesaz.pdf
    • http://vekosgroup.ru/userfiles/file/95846267598.pdf
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16071283148924---bajulogujatuko.pdf
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/18a878e067667cec75701af78d799de0/77404808797.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/a29408fe723f337de14cdd36359852a9/75564926665.pdf
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5cec1e9e76---zarewelixububikufozawaja.pdf
    • http://wwstationery.com/files/file/39795784376.pdf
    • http://fotografiafrancescosomma.com/userfiles/files/faselowirofelema.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d967.bin
27f245bcfd1a58326bbf414156ccfa2e5deb550132ddad090c0118881a0fc77a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD967 10724 bytes
font_01_sfnt_off0000f1e9.bin
37fd99f1106b7ba674ebcf42d35b1d065ed1b08aa3713f51343410aaa8e8a06b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E9 17804 bytes
font_02_sfnt_off00011fb0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB0 16792 bytes