Malicious PDF — malware analysis report

Static analysis result for SHA-256 28de98cad660c1c2…

MALICIOUS

PDF

69.2 KB Created: 2021-02-16 15:59:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ff194809079ba21880f1b83bd1303ce7 SHA-1: c224872e9fd6fe02c65f84700b00510b77b9d532 SHA-256: 28de98cad660c1c2f06af60256e1abf64fabdd71d8a13cedce86d3074b991fcf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution lure. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. The embedded URLs likely lead to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/aws?utm_term=how+to+cook+applewood+smoked+spiral+ham PDF link annotation
    • https://kaketoxemi.weebly.com/uploads/1/3/5/9/135989659/vavuxajarojemad_sopufovuxu_rakofajiruzeku.pdfIn PDF document text
    • https://nolopatemima.weebly.com/uploads/1/3/4/5/134583633/9661dce44dd5171.pdfIn PDF document text
    • https://ponozivodu.weebly.com/uploads/1/3/0/7/130775347/zoloxuzu.pdfIn PDF document text
    • https://zadivodewereb.weebly.com/uploads/1/3/2/6/132683121/muwetitezudozar.pdfIn PDF document text
    • https://gewolokumopez.weebly.com/uploads/1/3/0/8/130814623/4909811.pdfIn PDF document text
    • https://kafunonedejo.weebly.com/uploads/1/3/4/6/134662894/1402071.pdfIn PDF document text
    • https://juwomazitebuden.weebly.com/uploads/1/3/1/4/131414743/jasasat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468836/normal_6024938037ffc.pdfIn PDF document text
    • https://pebezudaxefen.weebly.com/uploads/1/3/4/3/134347708/8133449e.pdfIn PDF document text
    • https://getaforufuzok.weebly.com/uploads/1/3/4/7/134733873/razawem-futupadu-rabububu.pdfIn PDF document text
    • https://virefogagivagu.weebly.com/uploads/1/3/0/8/130815228/veledixelaw-titevilag-xogume.pdfIn PDF document text
    • https://wexivupesowapab.weebly.com/uploads/1/3/2/7/132712225/gakiruliroxotopasisi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/games_adventure_town_mod_apk.pdfIn PDF document text
    • http://sokexodine.rf.gd/mozosufupisojazit.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/azshara_s_eternal_palace_tank_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/ankhon_dekhi_720p_bluray.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/22529869437.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/xuzaxa.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD01C 5428 bytes
SHA-256: 5bb91497b2f10ef83273e30560aafa5324b04bc2c21705755700c4a74d32de82
font_01_sfnt_off0000e276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE276 10756 bytes
SHA-256: e6b1fa28e18ed0ec6059fbf2baedd942e067cc2a9d9b03027d7281c522c9ee87

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