Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ab882541a39aec…

MALICIOUS

PDF

75.3 KB Created: 2021-02-28 14:07:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5a6193d5fc287ab7cbb7c0a270ebbcf6 SHA-1: a44fcc64fd06778e99e742584bdd84fb91a4668c SHA-256: a0ab882541a39aec568687029a6a4d657a13c50ff20eabdfeaae3a8914061960
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary one pointing to 'gimoguvi.ru', suggesting a lure to a phishing site. The PDF's structure and content, despite being heavily obfuscated, indicate it's designed to redirect users to external, potentially malicious, web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/award?keyword=sinkmaster+750+jammed PDF link annotation
    • https://zipobirin.weebly.com/uploads/1/3/5/3/135386694/turubawexax-mujil.pdfIn PDF document text
    • http://malemukinupogeb.22web.org/81037965920.pdfIn PDF document text
    • https://natozopito.weebly.com/uploads/1/3/4/1/134108601/kowije.pdfIn PDF document text
    • https://marizezibafive.weebly.com/uploads/1/3/4/8/134865590/589e05e.pdfIn PDF document text
    • https://cdn.sqhk.co/jagojixego/hjbhiIF/everything_s_perfect_please_don_t_change.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lekukezasiva.rf.gd/41209561375.pdfIn PDF document text
    • http://jimagonekitop.epizy.com/fesorejaxaguvevududuso.pdfIn PDF document text
    • http://kitasavino.epizy.com/sagugon.pdfIn PDF document text
    • http://tofodubigar.epizy.com/40853176360.pdfIn PDF document text
    • http://samanoniminowut.epizy.com/cabo_san_lucas_fishing_report_november_2018.pdfIn PDF document text
    • http://tofolusobovuv.epizy.com/jekasosip.pdfIn PDF document text
    • http://bonitadobizaw.epizy.com/forklift_certificate_template.pdfIn PDF document text
    • http://xuzinom.epizy.com/23407133915.pdfIn PDF document text
    • http://sotexazonilot.rf.gd/anandi_vastu_calendar_2019.pdfIn PDF document text
    • http://didopip.epizy.com/mozaverudez.pdfIn PDF document text
    • http://dijemawijopetu.epizy.com/kutazonixazegorakekaxo.pdfIn PDF document text
    • http://nosigegu.onlinewebshop.net/gexol.pdfIn PDF document text
    • http://bifapekedareb.rf.gd/victorian_modern_cursive_handwriting_worksheets.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D1 5528 bytes
SHA-256: dd07efc71bc5cd410fddf1d077d2adc5eff92ba9faadd5151babc669887d41cf
font_01_sfnt_off0000fa90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA90 11176 bytes
SHA-256: 071fbe1a967aaa5f0bd3f11f4a90d3d4c2b94f72687d5a3001d9c99360d65c4b

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