Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2da6ea2e6852405…

MALICIOUS

PDF

72.7 KB Created: 2021-02-20 20:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0f8a1fe9b8bf5340d9a2175f266d2836 SHA-1: c9bab1660e2c6293135bc603b811e3a3e2b0d553 SHA-256: a2da6ea2e68524056fd52fb3901b08bfdcff260038337833295d6d1fb1acce46
126 Risk Score

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://jottigo.ru/wix?keyword=conjugate+acid+base+pair+worksheet PDF link annotation
    • http://bubolikava.22web.org/zilivejolubipapafawigorav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_6029da35f27f9.pdfIn PDF document text
    • http://prostosite.site/clavinova_piano_for_sale_near_me4g2gl.pdfIn PDF document text
    • http://mini-cam1.club/ielts_reading_test_1_book_1_answertkfih.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489035/normal_60076074b29bb.pdfIn PDF document text
    • https://fajesafopumusid.weebly.com/uploads/1/3/1/8/131871419/48d29.pdfIn PDF document text
    • https://tofibuji.weebly.com/uploads/1/3/5/3/135309424/segowaxoje.pdfIn PDF document text
    • http://9gusevshop.space/inheritance_cycle_fanfiction_eragon_x_saphirak95fx.pdfIn PDF document text
    • https://jovinafunen.weebly.com/uploads/1/3/2/6/132695325/vivufo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421778/normal_5fdc3641c80ba.pdfIn PDF document text
    • http://fidisop.22web.org/26828364193.pdfIn PDF document text
    • http://sutiwejepeb.22web.org/curse_of_oak_island_treasure_episode_guide.pdfIn PDF document text
    • http://vidclips.design/zudibejebomitolawufukidlsccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410727/normal_6028b2fb8e340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378175/normal_6024019572e98.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://regenazuwirege.epizy.com/42138266996.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_off0000e06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06B 5580 bytes
SHA-256: b3bdb01556afede927b900f6b9fe12a01307f4663f876d21bf3aa3c124bdd011
font_01_sfnt_off0000f36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36B 10136 bytes
SHA-256: 438c8eecd18c20ad2aaf7acd79f3a4feebdcede510593e9a84ea77d6d77f36fe