Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d17e3d6b5132b6…

MALICIOUS

PDF

76.7 KB Created: 2021-03-16 10:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1a6a572e5c57115a11cb783611f6605e SHA-1: 30d2a298b3b1d00c0912088ae169efe00ba34299 SHA-256: 69d17e3d6b5132b685fe896312581dddef51cd61f2fb1db36803507042a7a728
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many hosted on disposable domains, indicative of a link farm or SEO spamming operation. The presence of a critical heuristic firing for PDF_SEO_LINK_FARM and ClamAV detection as Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 strongly suggests malicious intent. While no scripts were explicitly extracted, the structure and URL patterns align with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/strik?utm_term=are+oven+baking+elements+universal PDF link annotation
    • https://kevulukopefot.weebly.com/uploads/1/3/1/4/131453006/4187507.pdfIn PDF document text
    • https://wojopukutipu.weebly.com/uploads/1/3/4/3/134345686/398963febc41.pdfIn PDF document text
    • https://punerumoluzes.weebly.com/uploads/1/3/4/8/134897399/nepasiso_kasuxulijo_ketekalaxat_wunelujinax.pdfIn PDF document text
    • https://nuvawusop.weebly.com/uploads/1/3/5/3/135302159/pajumoxovala.pdfIn PDF document text
    • https://ferizovewop.weebly.com/uploads/1/3/4/8/134887996/tisawugolojazu_wofetuzori_jutokago.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_6044d35e10ee0.pdfIn PDF document text
    • https://bigifami.weebly.com/uploads/1/3/1/4/131407708/napanefevodu.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/zewawa.pdfIn PDF document text
    • https://veralekixa.weebly.com/uploads/1/3/1/0/131069874/4178760.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414849/normal_6003115a18317.pdfIn PDF document text
    • http://zipafaxelati.sportsontheweb.net/66456325846.pdfIn PDF document text
    • https://fadusoga.weebly.com/uploads/1/3/0/7/130739873/vedogovepadaziju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_6027324c04254.pdfIn PDF document text
    • https://runumoviw.weebly.com/uploads/1/3/4/8/134854062/wajizasiv.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/usul_al-fiqh_al-islami_wahbah_al-zuhayli.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://pivimufe.atwebpages.com/how_did_the_pigman_wife_die.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ef6026-75bc-419e-92bb-e2d7eb1a33fe/who_god_is_from_genesis_to_revelation.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/how_to_install_house_electrical_wiring.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30a5a870-6e71-4c0a-a21b-91f27f058e9f/72300376947.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/what_type_of_oil_does_a_2000_dodge_durango_take.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/71839310058.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_off0000e086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE086 5140 bytes
SHA-256: f0ac23e8554db1072ae73b25a2761d7504eb869343c3e99f495e96cc640bdf52
font_01_sfnt_off0000f1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F1 10952 bytes
SHA-256: 8e665d570dbd08cc56a8dec567ffb0311971f6c863a82254b4f4a4f1800b9e4f
font_02_sfnt_off0001176f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1176F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3