Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6f2e219c1da2036…

MALICIOUS

PDF

68.0 KB Created: 2021-03-03 12:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7461e08e34da1fbeaa5369e275332a35 SHA-1: 3cc33d89c350b58fbf53a0d6e82a28a1e58e19c7 SHA-256: b6f2e219c1da2036e8548526a44e3e19b0a60919ea7df8526ef78bd88e7a1eb0
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://jottigo.ru/award?keyword=samsung+issues+with+amazon+prime PDF link annotation
    • http://pigigozoruda.mypressonline.com/dopafanimekabixozusirip.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/38185847835.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/vuzatefeziwexaxisime.pdfIn PDF document text
    • http://fusubakitakudup.66ghz.com/baderarovimu.pdfIn PDF document text
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/nosutovikugejopojak.pdfIn PDF document text
    • http://baranaydin.org/rarest_blood_type_in_the_world_rh_negative66vqr.pdfIn PDF document text
    • http://helpforteam.com/579414621055ccau.pdfIn PDF document text
    • http://aarbuz.space/28697293785g5f63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jivupezujoked.rf.gd/backyard_baseball_1997_free_full_version.pdfIn PDF document text
    • http://jirunogi.rf.gd/titen.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/29868691108.pdfIn PDF document text
    • http://sulosuduvemog.epizy.com/symbian_emulator_for_android_apk.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_off0000cd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2E 5444 bytes
SHA-256: a61d7d7ed3bfaa4d8c99a3fd63c4e4dcab8a33963912f4128a190b72b799a93f
font_01_sfnt_off0000dfa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA1 10420 bytes
SHA-256: 238b86da5f605f8e460f120e893f08e33998722e4096b4391533ad95ef526d20