Malicious PDF — malware analysis report

Static analysis result for SHA-256 d506229f058edac5…

MALICIOUS

PDF

78.1 KB Created: 2021-05-13 22:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ee34263f474a375d215efb95daed7304 SHA-1: f311f63e2c13a521616db0a709a403ff86e200e6 SHA-256: d506229f058edac52c042c67672d33d1b132138e4f74f2d5d2015e44d3cd6b9e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document's purpose is to redirect users to a network of potentially malicious sites. The presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 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://mezovuduw.ru/strik?utm_term=elements+of+musical+theatre+songs+about+hope PDF link annotation
    • https://cdn.sqhk.co/posuwumujome/Viikgju/61561403441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380883/normal_6022399051f01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378151/normal_5ffab6b079379.pdfIn PDF document text
    • https://cdn.sqhk.co/rizanatu/jPuu5oq/draw_in_chess_by_repetition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403689/normal_5fc578b263e00.pdfIn PDF document text
    • https://cdn.sqhk.co/pategazikiw/jceMNST/fasenipabuvapesosur.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/iUDharu/lapusijozomenetiladota.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/Yheushd/92222154424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389354/normal_604b25ea21cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409811/normal_605793e4c9d36.pdfIn PDF document text
    • https://cdn.sqhk.co/lexujowina/Vhcegg0/windows_10_launcher_apk_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/gchi7rb/directv_hd_channels_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/d4OELjb/my_talking_tom_funny_videos_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/cxrgjf2/animal_crossing_pocket_camp_flower_guide_roses.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/bhbginJ/30063773568.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492272/normal_6001c7df81c9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478655/normal_6001a9155c5af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490122/normal_60364cf40db11.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://warurodezum.epizy.com/nukuvokidelot.pdfIn PDF document text
    • http://bosirizowu.rf.gd/pafikuvotajutefo.pdfIn PDF document text
    • http://vupikefugogulup.epizy.com/9329634339.pdfIn PDF document text
    • http://fatebem.epizy.com/introducing_spring_framework_felipe_gutierrez.pdfIn PDF document text
    • http://zenowalu.rf.gd/fazokamuma.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF270 5524 bytes
SHA-256: 1c4f12bd2435aeee9966b7fa7056dfc2538ed4c6e937d16d14792ede5db10642
font_01_sfnt_off00010518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10518 10996 bytes
SHA-256: bdb4043acfbb5c59d9743e53c0b86c32af5ef42f5a1f762c5fb66270c9b7a88f

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