Malicious PDF — malware analysis report

Static analysis result for SHA-256 679710e71d2c595b…

MALICIOUS

PDF

73.4 KB Created: 2021-02-18 18:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5b7ed553889afac8dd59f88be1525114 SHA-1: b68ef146aa20ab71ba4534a7f33d99dc071cedfd SHA-256: 679710e71d2c595b74b2e3d3c6e99bec77734ede571dcc9fb9149cffbbbf1964
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://baarspo.ru/aws?utm_term=best+literary+analysis+books PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379732/normal_6011f6b517995.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/aiiidjf/lodobobuxulezakuxemezeje.pdfIn PDF document text
    • https://vejazejama.weebly.com/uploads/1/3/1/3/131381369/0b1a0891fb4e9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379846/normal_6001e3385aedc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382003/normal_601fa3de6e1df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485434/normal_601a46220757e.pdfIn PDF document text
    • https://cdn.sqhk.co/luwonowuwig/jahhjex/wowoseza.pdfIn PDF document text
    • https://kuxokovu.weebly.com/uploads/1/3/0/7/130738635/c1bbc769c09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465249/normal_5fe0bb0e67c3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496616/normal_5fd78fc9a6758.pdfIn PDF document text
    • http://nutupiwerumad.66ghz.com/43835768832.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/hchcgcW/biwaritelogomowa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fekuzigide.epizy.com/8150957138.pdfIn PDF document text
    • http://dosunadis.epizy.com/android_9_os_free.pdfIn PDF document text
    • http://gasigigi.rf.gd/devatufipatidepa.pdfIn PDF document text
    • http://bekapoza.epizy.com/87906215395.pdfIn PDF document text
    • http://mutiwudixoni.rf.gd/balenciaga_song_punjabi.pdfIn PDF document text
    • http://vigiwadovu.epizy.com/football_pc_games_2011_free.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_off0000e507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE507 5032 bytes
SHA-256: 820e19ff467eb09462afec7ce7fa0eb6d7b065e407a570eb4007f6f14ad6438a
font_01_sfnt_off0000f63f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63F 10236 bytes
SHA-256: a532dac2a68cf7fe20ec3f412ceb0337345f822c863aaba50de28c90ca47b16c

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