Malicious PDF — malware analysis report

Static analysis result for SHA-256 33787abaf6f3a4ee…

MALICIOUS

PDF

71.9 KB Created: 2021-02-16 19:36:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d5a18100cf8d097431c16697ed98e4e0 SHA-1: af8400871cbae1d2bd07dcb9bfd56c1bc6959ad7 SHA-256: 33787abaf6f3a4ee1b44eb1597364babf604bfca773a0ce410cd3fb08f0d9571
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://baarspo.ru/wix?keyword=minecraft+apk+0.14.0+free+download PDF link annotation
    • http://weex.info/depurafiguwekw9yjf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530457/normal_5fea1a58ea2d4.pdfIn PDF document text
    • https://sawuwirepugasup.weebly.com/uploads/1/3/0/9/130969548/261598.pdfIn PDF document text
    • http://onlineeshop24.xyz/learn_accounting_in_gujaratind4y0.pdfIn PDF document text
    • http://idealsit.space/timex_nature_sounds_alarm_clock_manualxco9x.pdfIn PDF document text
    • https://taruzalo.weebly.com/uploads/1/3/5/3/135398133/xewifupadoliku_xebosez.pdfIn PDF document text
    • https://fisujurij.weebly.com/uploads/1/3/1/4/131437504/0f42563851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393639/normal_5fe6e39e8db7c.pdfIn PDF document text
    • https://pufenenuboz.weebly.com/uploads/1/3/0/7/130738511/9818540.pdfIn PDF document text
    • https://lavivatum.weebly.com/uploads/1/3/1/4/131437335/997cb21a.pdfIn PDF document text
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/d3860cf5411e1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_602274cb48a10.pdfIn PDF document text
    • https://raziliselew.weebly.com/uploads/1/3/2/6/132695443/d1230284d022.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_600fd5dba59a1.pdfIn PDF document text
    • http://leree4.club/7094896043886ub1.pdfIn PDF document text
    • https://kezexawu.weebly.com/uploads/1/3/0/8/130814062/xipegeku.pdfIn PDF document text
    • https://tipipiteker.weebly.com/uploads/1/3/0/7/130775441/makobogeledulug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fukutinupamebo.rf.gd/bairagi_brand_song.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EC 5232 bytes
SHA-256: 2ce2408b488867a518df120ac7095bdd0e81b258152c797cfe40e7fa1ed0afd4
font_01_sfnt_off0000e2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DE 9820 bytes
SHA-256: 62f50d027bd2cc8431139ba973e77af7dcf4129982914109c56c7a72ff78a7b4
font_02_sfnt_off00010460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10460 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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