Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ba40e861f80a47…

MALICIOUS

PDF

80.5 KB Created: 2021-02-25 15:00:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: aba9cb73ef8e9daf2e7ef0e2ed46180a SHA-1: 8e1b32585c37b8c3ef5dedccd7a987c12638ca5a SHA-256: c3ba40e861f80a476d2e26100a5b8e95fccf9ccb14bc4a4ed56fd27f20ccfe4b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/award?keyword=how+to+use+yeti+with+audacity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491436/normal_5fd2e9434bfa1.pdfIn PDF document text
    • http://fumigatoff.online/zotigibemosota6rwca.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/hbthhPd/little_alchemy_3_online.pdfIn PDF document text
    • http://pumba.fun/35534640700tla3i.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/67107003186.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/easytouch_indoor_control_panel_no_comm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459794/normal_602163ef1214a.pdfIn PDF document text
    • http://nefuzixitelu.iblogger.org/filehippo_photoshop_cs6.pdfIn PDF document text
    • http://datinge.site/jelly_filled_donuts_pokemong2ofs.pdfIn PDF document text
    • http://e-devletturkiyeaidatsistemimgovtr.com/33198638491tzzfz.pdfIn PDF document text
    • http://gowanenutik.mypressonline.com/xasexuxi.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/visagogijulep/jekinuxigibujavaje.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/49103418813.pdfIn PDF document text
    • http://vujomigokije.rf.gd/jowotudej.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/62016981070.pdfIn PDF document text
    • http://garonidu.epizy.com/tiporitap.pdfIn PDF document text
    • http://litorow.myartsonline.com/pegireravemekexesuxopob.pdfIn PDF document text
    • http://tumevadokopeki.rf.gd/nemafulexevukebuxoriwos.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_off0000f8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A8 5052 bytes
SHA-256: b12bcaed3d6cc79a699d5ac8b894dfcca230add005767890d561c7790eb0953f
font_01_sfnt_off000109ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EF 13652 bytes
SHA-256: 3da6972e06bb44c4bf5d4ef989645f333e68757c86b0e8ede5bc2366115e2c83