Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04e1d2e4112f288…

MALICIOUS

PDF

80.3 KB Created: 2021-08-29 04:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 8771bcca3989cac48f322475cf471416 SHA-1: f221cd1d8d4d10a8418f22363e7a965db982f9dc SHA-256: e04e1d2e4112f2888cc38076e5e09204f5c05f3177dd6c287342fbb750be71c4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The file contains numerous links to external websites, many of which are hosted on compromised WordPress installations, suggesting it functions as a link farm to distribute further malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/d5916e321511673bc540a6d5d81bc474/kiwoluvimizapawopobexebox.pdf In PDF document text
    • https://livredart.com/ckfinder/userfiles/files/zirati.pdfIn PDF document text
    • https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/bb2ntghslanf3f5s6fileeh3p5/xenexopefif.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/78399137932.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16128d130e6ce6---watalekifozoxasar.pdfIn PDF document text
    • http://transfertrolley.cn/d/files/80449737615.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610cf0e975c2a---98101520734.pdfIn PDF document text
    • https://taechoclub.com/FileData/ckfinder/files/20210803_02D167ABE422D9FE.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1612432bc3a903---62951653268.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/4e627104ae87a08086b5c706ec593925/tidusodojiwus.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766ba611892---jurokulosemuweji.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/egf4bip6r6resqqn1sshos1i0f/82319391117.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076260e8db86---4459027980.pdfIn PDF document text
    • http://www.rify.us/cms-uploads/files/15398294322.pdfIn PDF document text
    • http://www.naraihillgolf.com/admin/userfiles/file/lomojefotuvam.pdfIn PDF document text
    • https://pointswestliving.com/ckfinder/userfiles/files/59250117931.pdfIn PDF document text
    • http://short-story.ru/upload/file/moruzododitijatuzu.pdfIn PDF document text
    • http://movitecnic.fr/ressource/site-image/files/wogukufafuduboralexir.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/im3bgcjl557jmrjnuejthjc5i8/xepivevuwifet.pdfIn PDF document text
    • https://dsverano.com/UserFiles/File/52674563636.pdfIn PDF document text
    • http://www.toptehnik.si/images/ketipenidisupaseziv.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f72823cb3---zugalezegavivagife.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607576fa4787c---22786766742.pdfIn PDF document text
    • http://azinsaghf.com/cache/fck_files/file/pefetukewubevi.pdfIn PDF document text
    • http://impex-italia.it/userfiles/files/4029655471.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=save+as+pdf+for+ms+wordPDF 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.

FilenameKindSourceSize
font_00_sfnt_off0000d799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD799 10548 bytes
SHA-256: c22f547a18345a71cd1d7ba966b7a20ecfcbf433e6cc00894567790aee9a9734
font_01_sfnt_off0000efae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAE 16448 bytes
SHA-256: 6f9061ac45f5e540f7d99573ff5300b1462437fa9c5ec90ee4233739eb234336
font_02_sfnt_off00011a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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