Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d9eb57e965c7843…

MALICIOUS

PDF

84.0 KB Created: 2021-03-15 14:26:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3a43238c50ae5f05b01d999a13bef768 SHA-1: 9f3ce81226c1dd951ad202cbb071290d07cb424f SHA-256: 2d9eb57e965c784359f7a6319e6fdd2d2afd6204f67cbc49ac6812757842d0f3
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with one specifically pointing to a suspicious domain ('golowaki.ru') and containing a keyword that appears to be a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. Although no scripts were extracted, the presence of numerous embedded URLs suggests the document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/award?keyword=le+tissu+cartilagineux+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422367/normal_600ffbb94a36c.pdfIn PDF document text
    • http://gokojemisivuf.22web.org/bcbs_retail_pharmacy_claim_form.pdfIn PDF document text
    • https://rizigavitud.weebly.com/uploads/1/3/4/5/134581125/0383410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452400/normal_6040edb2bac37.pdfIn PDF document text
    • https://nesotufofiwin.weebly.com/uploads/1/3/1/3/131381712/8671384.pdfIn PDF document text
    • https://wixoxane.weebly.com/uploads/1/3/4/7/134734379/puriw-wifozoperomo-sewemubo-zavajew.pdfIn PDF document text
    • https://nuzuloluxeguvox.weebly.com/uploads/1/3/4/8/134874948/8882292.pdfIn PDF document text
    • http://naguvogegexaze.22web.org/poe_pantheon_guide_deutsch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sapoziwuzodol.rf.gd/66937015610.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/faxitibabuwiwi.pdfIn PDF document text
    • https://a7563df4-ba19-4d82-a8a0-b2470d957038.filesusr.com/ugd/61f964_b5788c6a795e4168988bfb9e6c94d4f1.pdf?index=trueIn PDF document text
    • https://6323cc82-cf72-43ae-bc7a-f8d691a1d37e.filesusr.com/ugd/4f3578_cf206198273b423f8d79d8e0ab4aa5ed.pdf?index=trueIn PDF document text
    • https://8f1c0ae7-1ba6-4c51-a623-4d29f5e3aebb.filesusr.com/ugd/c1615c_4193029b6a0e4cbabfd5c4d87cd28ab0.pdf?index=trueIn PDF document text
    • http://tigisatobenuwi.epizy.com/sojujemulijiwixi.pdfIn PDF document text
    • https://48cc712b-de5e-493e-a198-f8962849e22b.filesusr.com/ugd/d2751c_eb06f512f36b460282bc458701c4c642.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wunojipu/raypak_pool_heater_error_codes_spk.pdfIn PDF document text
    • https://9a1eab6f-da2d-4a41-99bb-18a59f11b130.filesusr.com/ugd/c2b690_509bd124a0c8420bb216c2565135d13c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gebukil/91005177137.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/el_difcil_arte_de_amar_pelcula_completa_en_espaol_latino.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/62249216875.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB66 5104 bytes
SHA-256: 68aaf6f1887fa98541c0b297b13cdba04d88a3fbf30dd4ff912587cce8b6097d
font_01_sfnt_off00010cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD6 12128 bytes
SHA-256: a38999071321edf704b7f023b91fbf611ef8a0cb8323c4e460df121c5e2de9b8
font_02_sfnt_off00013329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13329 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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