Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f40bb063e807faa…

MALICIOUS

PDF

82.7 KB Created: 2021-03-13 23:03:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 8509b5947542fc15f90c264ef605b115 SHA-1: 407c0a972f0a7cf08ff7e506b8beef0a1e3c1dc8 SHA-256: 9f40bb063e807faa3b1c4cc29ddef6995e1375a4b5ff61e410d4696f75afe670
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content or phishing sites. The presence of external URIs and the link farm heuristic strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://resalured.ru/wix?keyword=ninja+ultima+blender+plus+bl830 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495400/normal_6011b089d3819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478703/normal_602b7ff8ecc6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455370/normal_601c8969d5dfa.pdfIn PDF document text
    • http://scm03.ru/starting_electronics0joit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457561/normal_604cfd0f76161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479710/normal_6019201649da4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469831/normal_6011c3d1dfd05.pdfIn PDF document text
    • http://giftcard-sale.store/bodyguard_movie_ringtones_freeeiouc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_6028f999e3698.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495246/normal_6024fd910250e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489834/normal_6049a70222bb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463830/normal_5fe78c953a487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413011/normal_6033baf021483.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475728/normal_603b88efd5109.pdfIn PDF document text
    • http://efarbok.xyz/little_house_on_the_banks_of_plum_creekktc6j.pdfIn PDF document text
    • http://supportcopyright.net/4127859605sadvx.pdfIn PDF document text
    • http://circus.market/508322184451tze2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408009/normal_604ccc1c731cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410695/normal_60054d8310290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495399/normal_603cf764cac5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_6022f90728b95.pdfIn PDF document text
    • http://trendmobile.ru/minecraft_mod_aether_portal2b69o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419626/normal_6011e4a39ab73.pdfIn PDF document text
    • http://monoga.space/xupumivonefg94t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000101c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C1 5792 bytes
SHA-256: 40fd20c8d614176c202d8abe7026c10f077d66b6abebc6f02fd821ed44cbe79c
font_01_sfnt_off00011551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11551 11288 bytes
SHA-256: b635e6f83e0faf0d544f56d6f0fbb7904e45ce6bb600905397c979bb32f6be3c

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