Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7a56f6f687f94e…

MALICIOUS

PDF

70.7 KB Created: 2021-02-23 13:26:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6aa88c835acba0db91e786d6d4460e76 SHA-1: adae1f534c81530d0aa8028b5734562f08d1f6a3 SHA-256: ab7a56f6f687f94eed8f98d8887d8fbc02d240b427f042844b9fdc8469724f85
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=natural+minor+scale+guitar+chart PDF link annotation
    • https://doxibizogo.weebly.com/uploads/1/3/4/8/134893922/9764321.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376611/normal_5fde7271e90c9.pdfIn PDF document text
    • http://cuzinfo.ru/fopiwabejosuluvewbbnt.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/fonimavuji.pdfIn PDF document text
    • https://paporese.weebly.com/uploads/1/3/1/0/131071113/3343653.pdfIn PDF document text
    • https://bosamekuxukis.weebly.com/uploads/1/3/4/6/134672370/5918283.pdfIn PDF document text
    • http://cardioactiveufficiale.site/idle_heroes_replace_hero_guide9hhh7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469640/normal_5fe7c4fd7ed40.pdfIn PDF document text
    • https://rosowimibezot.weebly.com/uploads/1/3/5/3/135392622/fifipidewofedev.pdfIn PDF document text
    • https://zokuvulasaxibu.weebly.com/uploads/1/3/5/2/135298812/97cf5fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417817/normal_5fe8184244a31.pdfIn PDF document text
    • https://fugakesuj.weebly.com/uploads/1/3/0/7/130776648/kosozenujiwe.pdfIn PDF document text
    • http://hookup154.space/37584861812vc7p2.pdfIn PDF document text
    • https://sidomepavoresob.weebly.com/uploads/1/3/5/3/135322675/3328345.pdfIn PDF document text
    • https://tanatomunedasov.weebly.com/uploads/1/3/5/3/135325499/6f6dfafe.pdfIn PDF document text
    • http://keepxufi.space/76276990345roj0.pdfIn PDF document text
    • https://lekopejener.weebly.com/uploads/1/3/5/3/135323345/duvakogurilafirit.pdfIn PDF document text
    • https://tunikasas.weebly.com/uploads/1/3/1/4/131438809/fufiwuzodutuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A4 5184 bytes
SHA-256: e8a0303324fc7062399a7d062c8715e694df061bd01fae2fb283a8175d64548b
font_01_sfnt_off0000eb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB19 10160 bytes
SHA-256: 97655f2d03bd81abc95395026cb01562eede330123ec70f46fc0ea7df3b0eb99

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