Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f206b3c195e556d…

MALICIOUS

PDF

77.4 KB Created: 2021-03-03 13:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4910bd60d116d32153f65cceb196d58e SHA-1: 520c777a1ca646a90bf730e0773dbbaf740bdcd3 SHA-256: 1f206b3c195e556de22377ef2bccfbcc0266df0fb83a5c9d280771be051d85fa
126 Risk Score

Malware Insights

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

The PDF document contains numerous links to disposable hosting domains, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search queries, directing users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/123?utm_term=what+is+the+best+electric+toothbrush+for+braces PDF link annotation
    • http://intereriia.com/36113696512ddb7q.pdfIn PDF document text
    • http://jobs-ingenieur.best/bexuxulawelufijexuzopunazpjx26.pdfIn PDF document text
    • https://rorefodelubo.weebly.com/uploads/1/3/1/4/131452934/c8f592ad0.pdfIn PDF document text
    • https://putepinezuvoko.weebly.com/uploads/1/3/1/8/131856998/boxopisigu.pdfIn PDF document text
    • http://palitra-cveta.ru/favisumuxeseg4np0m.pdfIn PDF document text
    • https://cdn.sqhk.co/xezexasag/ifhdxhg/uc_browser_4g_download_video.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/TTw8Hhe/69992169923.pdfIn PDF document text
    • http://phrensy.co/nupaxisanugikipulefabopuv0yk.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/gjgghbw/scarfall_the_royale_combat_download_uptodown.pdfIn PDF document text
    • https://bobepeduzogir.weebly.com/uploads/1/3/4/6/134673546/kerafareluv.pdfIn PDF document text
    • http://duplicwcnj.space/divine_mercy_novena_day_8m76sw.pdfIn PDF document text
    • http://dressnbuy.com/behavioral_neuroscience_breedlove_and_watson_9th_editionvndu0.pdfIn PDF document text
    • http://creamwalls.space/tovuxazefalaruxiwodetmnquf.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/hobby_ideas_for_characters.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://pimoxonevuwewax.atwebpages.com/61029694447.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/xizosujivaluluxuwib.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_off0000e394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE394 4900 bytes
SHA-256: 0b61ec5e200c1b2272e36aafee58fb617a2752ec1a258d26df487d2033e55e2b
font_01_sfnt_off0000f454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF454 11296 bytes
SHA-256: dc68ba122d105885835b7044e9023fbf4809956ad2833d88c0381adaae848048
font_02_sfnt_off00011a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A56 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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