Malicious PDF — malware analysis report

Static analysis result for SHA-256 74478652e620d5dc…

MALICIOUS

PDF

78.6 KB Created: 2021-02-24 22:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d8f1d05e9aa51228f9f5390ba9da1a16 SHA-1: 5fd701bd42d591100ce8fe18be4ef5882e3cfcc6 SHA-256: 74478652e620d5dc45a57fccd8535e3241b4442fac34c802567db6512b521e5c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=ubi+concordia+ibi+victoria+artinya PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415756/normal_5fcfa729befb9.pdfIn PDF document text
    • http://samyog.ru/calories_in_boston_market_sweet_potato_casserolefos7h.pdfIn PDF document text
    • http://takipleskazan.org/58570565272mzwrh.pdfIn PDF document text
    • http://yogist.fun/cat_jumping_sideways_gifiefxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475859/normal_601ba6a3ba6f9.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/wizukus.pdfIn PDF document text
    • http://zespodsvetkoy.site/91211833946o2i9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_6015b77cbf8ee.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/preterite_vs_imperfect_exercises_with_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407331/normal_6007efe1e5791.pdfIn PDF document text
    • http://copyrightsupport-ig.com/world_cricket_battle_game_apkbyfhm.pdfIn PDF document text
    • http://raisinsapp.club/android_available_timezonesz3bzx.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/tukata.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/resumen_del_capitulo_6_de_el_principe_de_la_niebla.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480580/normal_5fccb7c1731dc.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/planificacin_estrategica_de_mercadotecnia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/bipilekad.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/vexubasabolipumujesu.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_off0000f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76B 5016 bytes
SHA-256: c76d5ea0635217fb1c9b0fe858ef2323e6d4a5d3e8bfa2fc1a79aebebf8c4471
font_01_sfnt_off00010896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10896 10776 bytes
SHA-256: 6c76c2cb468b7d8d42052c5bfe04903bcc181d57da376cda6a4b5603cd484773

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