Malicious PDF — malware analysis report

Static analysis result for SHA-256 5369eb9ece5e09e9…

MALICIOUS

PDF

71.5 KB Created: 2020-12-26 17:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1a3a8d5ab9b67ac61e4659fac330eb17 SHA-1: 90fa5cf4b04a1ba2930129dcd8a7fb66acb26cac SHA-256: 5369eb9ece5e09e91fa812fe2f43c5afd45ca139eea2f101d5fb9f7b9194f743
186 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to multiple external PDF files hosted on disposable domains, likely for SEO manipulation or to host malicious content. The presence of a URL with 'utm_term=sky+force+2004+game+download' suggests a lure for game downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://trafficel.ru/strik?utm_term=sky+force+2004+game+download PDF link annotation
    • https://duxegebipuvakij.weebly.com/uploads/1/3/4/0/134095857/2379679.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/17a6ff36b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_5fa427a06f407.pdfIn PDF document text
    • https://papazutizo.weebly.com/uploads/1/3/4/4/134467207/sodoxugazereguv_sixidologe_degotuzuzizupo_midoz.pdfIn PDF document text
    • https://mutimerujufidi.weebly.com/uploads/1/3/4/5/134526942/a02207.pdfIn PDF document text
    • https://gazapaxinu.weebly.com/uploads/1/3/4/4/134475358/wumodezo_zujanunajirewi.pdfIn PDF document text
    • https://cdn.sqhk.co/fujavuraleko/MhhbUxn/vizelafatuzeb.pdfIn PDF document text
    • https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/doxavijirodo-kisumuluzidak-xegodagozufev.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/hdPihd5/free_ipod_music_downloader_software.pdfIn PDF document text
    • https://jajivinejide.weebly.com/uploads/1/3/4/3/134354145/5958e21.pdfIn PDF document text
    • https://cdn.sqhk.co/xilelawemu/ggjhhh0/best_meal_night_before_a_soccer_game.pdfIn PDF document text
    • https://cdn.sqhk.co/dusimefosix/YRfnbha/marketplace_mall_stores_champaign_il.pdfIn PDF document text
    • https://ginadilu.weebly.com/uploads/1/3/4/7/134768391/pebenojar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372373/normal_5f88756cc511e.pdfIn PDF document text
    • https://xoxisutebigag.weebly.com/uploads/1/3/1/4/131453062/376a5d8.pdfIn PDF document text
    • https://cdn.sqhk.co/bepasasa/gichfmV/26614791860.pdfIn PDF document text
    • https://cdn.sqhk.co/silinetufid/bEGgjwp/60852447149.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://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_off0000cb97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB97 5548 bytes
SHA-256: 8e74c697d9fa0e19136eadbd474882ba89e46ed3fc7357638f73ba277f4217d8
font_01_sfnt_off0000de6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6D 10720 bytes
SHA-256: 7e0aba2a273e772027732a4823f6d4516c62f04a0ecb13ed3b35379682a0c7d1
font_02_sfnt_off000102d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.