Malicious PDF — malware analysis report

Static analysis result for SHA-256 703dd94bd10a47e3…

MALICIOUS

PDF

82.6 KB Created: 2021-09-02 12:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 49881c327c0999b7002f3ea1ca81c3e4 SHA-1: 1d11c3b7b184bfcbb56f8ba145bc0336c7f18e2f SHA-256: 703dd94bd10a47e3c2949ba40affb857e2d904e270858d514347ce9a64d3a88f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress upload storage, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely intended to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/d90p3f62ehvegcv94e1r77lte0/woraledemizuxodukoze.pdf In PDF document text
    • https://pmfegypt.com/userfiles/files/17125052948.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608461bf8e2d1---48248976608.pdfIn PDF document text
    • http://bafiti.com/sklep/userfiles/file/16094471133.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/abc3e13e04b79eeb539e9db77cf1f1cf/lavidefagupewi.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/otunall20ekfm44okiuahmu6v5/tufesisuwejogawon.pdfIn PDF document text
    • http://cipetbhopal.com/webimg/files/5132257474.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c42532a42f6---wirufotavet.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/dc7074c656d4306bcd408fc8624474c8/12194316310.pdfIn PDF document text
    • http://vodnik48.ru/content/file/76847281931.pdfIn PDF document text
    • http://yunnanyingxiang.com/ckfinder/userfiles/files/8789596344.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/8bpmjrl9n0f2b9ie7rclinp36b/xirosumapukexexomok.pdfIn PDF document text
    • https://anyimaker.com/upload/users/files/lekebofijaluvujeselupe.pdfIn PDF document text
    • https://qpshouse.com/upload/image/file/93131304561.pdfIn PDF document text
    • https://dcoderesearch.com/uploads/waxatatadopukifejoden.pdfIn PDF document text
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gunokaragafakonaxuj.pdfIn PDF document text
    • https://baglab.pl/galeria/file/vusiwukugidazobodigapa.pdfIn PDF document text
    • https://tidurmalam.com/contents/files/kokit.pdfIn PDF document text
    • http://maternites-catholiques.org/ressource/site-image/files/14305972367.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/werepigozifinelenu.pdfIn PDF document text
    • http://meadescafe.com/userfiles/file/razugodomowipinowexerubed.pdfIn PDF document text
    • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/23742858407.pdfIn PDF document text
    • https://nocnepal.org.np/ckfinder/userfiles/files/zifixekekobomerifaxok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=maths+functions+grade+11+pdfPDF 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_off0000dce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE0 10996 bytes
SHA-256: 4635cc3fa9f72647def3500b5756ac10ffa4d3dfb56166c1a8e8b826d3658729
font_01_sfnt_off0000f642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF642 18112 bytes
SHA-256: 447fdfcc93b4adc561334939d226d88d045cdfb313c4f264b2b6014a84e0d7ba
font_02_sfnt_off000124e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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