Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9cc06f600dbafb…

MALICIOUS

PDF

77.8 KB Created: 2021-02-24 20:45:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 40dc1fc7da42f75a98f6c3deca160b80 SHA-1: c84934762a0bdbc61fda5724582e8c6e5be3db88 SHA-256: 9a9cc06f600dbafbe60adb5f8618c06ad19665365f1cc852db32cb1b083c8897
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/award?keyword=catch+me+if+you+can+dual+audio+hd+movie+download PDF link annotation
    • http://tumibejum.iblogger.org/24024281907.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/jlYjjgc/sefamivo.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/gdgg2je/40984818106.pdfIn PDF document text
    • http://lnstagram-office.com/45294898591i79bw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378161/normal_601c9617d20e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467003/normal_5fce35b439fee.pdfIn PDF document text
    • http://poriwesebu.22web.org/cohesionless_soils_are_formed_by.pdfIn PDF document text
    • http://xasuxugadivusug.22web.org/vijupifegalajogeneki.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/9034785244.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/2411964619.pdfIn PDF document text
    • https://cdn.sqhk.co/tesigasefaxe/Yevjhjd/cartographers_definition_geography.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500199/normal_5ff1cd23993ea.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/81137696491.pdfIn PDF document text
    • https://cdn.sqhk.co/xewasejeve/5yuCifN/86679201743.pdfIn PDF document text
    • http://trynutra.shop/burefulipudoxisizo0qwlm.pdfIn PDF document text
    • http://septiki-rf.website/fogivotenoe.pdfIn PDF document text
    • http://sodaapp.club/660561237241yjbz.pdfIn PDF document text
    • http://nakomajuvedina.iblogger.org/79019710161.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jemibare.epizy.com/93547993674.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/zamivosava.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_off0000f4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F0 5144 bytes
SHA-256: 05ea3ec9fe0eda07bed3ea657858d26b1ff44609af699600ef21a04cd1529803
font_01_sfnt_off00010669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10669 10260 bytes
SHA-256: a7d0960fe1da9290a7cc5ae55665eb42762fec1f1d9201bb0e0822345589922a

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