Malicious PDF — malware analysis report

Static analysis result for SHA-256 002e56db46142418…

MALICIOUS

PDF

74.4 KB Created: 2020-11-21 16:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e37da8629b310c057ddc94b3781aec24 SHA-1: 9b6f84209863f0c0b317e7e010b1f30a2c75a900 SHA-256: 002e56db46142418980f535fce228dceb6d747a1ec37902f73aa45ebdc85e9f5
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged by multiple critical heuristics as malicious, specifically for containing a link farm pointing to known malicious redirector infrastructure. The document appears to be a lure, leveraging a large number of external links hosted on disposable domains to obscure its true malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?utm_term=tdah+pdf+2017 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5fb4b435f2708.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/e7dca301.pdfIn PDF document text
    • https://bagukewedofitaf.weebly.com/uploads/1/3/4/5/134507185/riwugesovoguginip.pdfIn PDF document text
    • https://noxurujoba.weebly.com/uploads/1/3/4/3/134384046/6436272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5f9a5332dc610.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/lafomu-fowesutom-dabikituduxun.pdfIn PDF document text
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/renagabodube_naponinujoted.pdfIn PDF document text
    • https://dexonakupo.weebly.com/uploads/1/3/4/6/134644734/e90016104ff.pdfIn PDF document text
    • https://wirufaxiferid.weebly.com/uploads/1/3/4/5/134599318/kakil.pdfIn PDF document text
    • https://xafarapodekil.weebly.com/uploads/1/3/4/3/134369556/551962.pdfIn PDF document text
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/6751207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473656/normal_5fa78758443c8.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/6848583.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
    • https://uploads.strikinglycdn.com/files/82486565-51b4-45d6-aaa4-114a180258f7/minecraft_more_furnaces.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_off0000d873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD873 4504 bytes
SHA-256: abc5629c7166bd60ef4e033237034086fdb4b92f8f6f434fee9f3da25868984d
font_01_sfnt_off0000e7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C6 11924 bytes
SHA-256: df5018e9c8803ac3fcd3e52c7bb594fbfe9ceae372411410b6f9afc80a152d36
font_02_sfnt_off00010e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E85 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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