Malicious PDF — malware analysis report

Static analysis result for SHA-256 2175d04ed72c92df…

MALICIOUS

PDF

76.8 KB Created: 2021-03-03 14:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 55c5b10ea0ceac9c4f911ddb8a4aab38 SHA-1: 53f6656ed3ce87e3754ee0d36c0cd4c38c54cf9e SHA-256: 2175d04ed72c92dfbd038e258e2912f8bfe07c6d4fea32358cdbb42bb2695c5e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://xajibur.ru/award?keyword=tascam+portastudio+424+specs PDF link annotation
    • https://guxulixekakuved.weebly.com/uploads/1/3/5/2/135294256/1950162.pdfIn PDF document text
    • https://luwujapi.weebly.com/uploads/1/3/4/7/134751522/jiwoxezurakozex.pdfIn PDF document text
    • https://zavomori.weebly.com/uploads/1/3/4/3/134335150/zurajasen-lidax-betaz.pdfIn PDF document text
    • https://sokedafagu.weebly.com/uploads/1/3/1/4/131437755/efb6d.pdfIn PDF document text
    • https://torimavilok.weebly.com/uploads/1/3/5/9/135984964/joxiref_xemajoradires_kisewusej_degobowamozi.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/what_does_sublime_mean_in_there_will_come_soft_rains.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/another_word_for_visual_learning.pdfIn PDF document text
    • http://gudelew.mywebcommunity.org/aristotle_poetics_tragedy.pdfIn PDF document text
    • https://tujarabevazedi.weebly.com/uploads/1/3/4/2/134235746/9976840.pdfIn PDF document text
    • https://verigidiloje.weebly.com/uploads/1/3/0/8/130874422/b423d.pdfIn PDF document text
    • https://wadumajaniko.weebly.com/uploads/1/3/1/3/131383958/6421835.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/nilititonawafim/hello_print_business_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/gikokitit.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/chukyu_kara_manabu_nihongo_teacher_manual.pdfIn PDF document text
    • http://vebojikabugoxa.rf.gd/professional_business_card_templates_psd.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_off0000e97b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97B 5356 bytes
SHA-256: d22b4111703ae2af19e23300d552351af150e15f9944ecdb7107596a801f85c0
font_01_sfnt_off0000fb9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9E 13420 bytes
SHA-256: 1a68061ade6e60b358a09721f6fa193cde80dc9fbb67f217695a87f52845c0ee