Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a8c4f68828939e…

MALICIOUS

PDF

69.6 KB Created: 2021-03-02 03:08:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 590c65024fe915f69049fd248a958768 SHA-1: 9538485003fb340dcbfe06c7e4a8022be750d0f8 SHA-256: f5a8c4f68828939e0cd95184d957c55553e2bd04843487778711650380875de7
126 Risk Score

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://maypoin.ru/wix?keyword=pioneer+deh-x4800bt+manual+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/semiwewedazi/fjgA5KQ/raft_simulator_apk_mod_unlimited_resources.pdfIn PDF document text
    • https://vodemiteju.weebly.com/uploads/1/3/4/7/134722100/1c68887.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/eKihgdR/ford_super_cobra_jet_heads.pdfIn PDF document text
    • http://gemofesane.medianewsonline.com/what_is_a_monastic_town.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/EgiheLU/science_journal_articles_free.pdfIn PDF document text
    • https://kobawepa.weebly.com/uploads/1/3/1/0/131070010/a74ec19e863e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470016/normal_5ff8ae2499616.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392451/normal_600256345c1f7.pdfIn PDF document text
    • http://dhl-order.info/70049703085r10rc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479902/normal_5ff37406e1974.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/sojixi.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/lukadovusitazanapup.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/ridafotodawifeb.pdfIn PDF document text
    • http://vunonam.atwebpages.com/what_is_complex_trauma_in_mental_health.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_off0000cf7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7D 6076 bytes
SHA-256: 1559bd94eaa613c75d569fb8ef5733b2ef181684cd533fecea7fa484ae3b47e1
font_01_sfnt_off0000e3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C3 10412 bytes
SHA-256: 9ec0560988c97661d9a3e30a4f57b7e3e58d2bd2ce691f99eab41a0df4b77464