Malicious PDF — malware analysis report

Static analysis result for SHA-256 1196fd1471548692…

MALICIOUS

PDF

97.8 KB Created: 2021-09-04 22:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c00f5ad775ac673f62391a7659ba750c SHA-1: ea5dd67bb18b703b46fb3c7d9eb35391d2b37b42 SHA-256: 1196fd1471548692fff453bbb37933da5d99987e9b0d291da5c3521073794159
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it is an advance-fee scam lure. The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting an attempt to redirect the user to a malicious payload or phishing site. No scripts were extracted, but the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

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 http://the100voicesofgospel.de/fichiers/newsletter/file/39913909223.pdf
    • https://almudenafernandez.co/ckfinder/userfiles/Files/jimokemisolofi.pdf
    • https://designclarf.it/file/36377791912.pdf
    • http://stpatricksreunion.com/clients/84553/File/bidunemasobojupomalubewu.pdf
    • http://soft-pro.hr/upload/datoteke/94234884278.pdf
    • http://kahounova.cz/userfiles/file/82240789479.pdf
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160deb6e0d1881---63227526060.pdf
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/c03c0tv1n3s661n1rr3gp0ebrk/kutisuzidogof.pdf
    • https://atvatextile.com/upload/ckfinder/files/repozi.pdf
    • http://khachsansapa.vn/webroot/img/files/93666642070.pdf
    • https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/5b801720b4d1755f19e1be0538660ffb/69051150890.pdf
    • http://www.juniorcollege.cl/ckfinder/userfiles/files/fopoxaxafamuvuxeg.pdf
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fd38da9096d64e73504f825379d7b342/mesimabijugomoratumavaliz.pdf
    • https://dienlanhhonganh.com/images/pic/file/wurumadotogunujibamezixar.pdf
    • http://sklenicky-obchod.cz/web/admin/fckeditor/userfiles/file/topizudosoxelabujupav.pdf
    • https://ceral.pl/ceral/pliki/file/sobutuzat.pdf
    • https://wolfgang-photography.com/userfiles/files/6230465953.pdf
    • https://goodline.by/userfiles/file/97685428290.pdf
    • http://zrdb-drogbud.pl/Upload/file/dudanametepazukeduvom.pdf
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/da91d244b4c94d39173d901023e8ff06/rarofagawufatumeludiwe.pdf
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609561a9b1240---dolezatowipogiserob.pdf
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/1lpeo2sris78l5rjhsur858vf1/rotifusabaju.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/n66248uhc28vr9ah6qnc4sh4vq/68242584528.pdf
    • http://starlightcelebre.com/clients/4/43/43e9139217482d7666ce300faf566241/File/63133755102.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=ford+focus+2008+manual+europe
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffca.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCA 16792 bytes
font_01_sfnt_off000117db.bin
fddcbe21bdf9fb2753729b4ab5b26d7a3fbb01e3fe51d41ab0725360e25c189d
pdf-font-stream PDF embedded font (sfnt) at offset 0x117DB 16244 bytes
font_02_sfnt_off00012dca.bin
fe3cd4c0cc19fec68d3b0f50a234d784b779b0812fb765c021894a786e48eced
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DCA 11116 bytes
font_03_sfnt_off000147be.bin
49c0a4f983fb0495d9b445bb27a00bed0e0f023f6408a3f42644baf1d4c8edbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x147BE 19004 bytes