Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be04f1462a859eb…

MALICIOUS

PDF

85.7 KB Created: 2021-02-28 02:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bc1f86cfc9aa09d2f33233c7e933f39b SHA-1: daa61ff654bece52a89c28d87ae3be2bf4cf397d SHA-256: 8be04f1462a859eb09258a5a276cc934129f7608e8373a74e69e81b6507258fc
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to "A raisin in the sun" and the authoring application, suggesting a lure to disguise the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/strik?utm_term=a+raisin+in+the+sun+summary PDF link annotation
    • http://theboldpantsproject.com/kodasepezunenemasaxofee6kra.pdfIn PDF document text
    • https://cdn.sqhk.co/gukitane/jbiahcV/wegupelav.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/27542714283.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/eicr_form_freelhtey.pdfIn PDF document text
    • http://ses-sanobrabotka.ru/83007519830pt72b.pdfIn PDF document text
    • https://cdn.sqhk.co/jivonotiso/4ieMEij/87597053917.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/ggUidkl/bcit_medford_nj.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/eeja4ji/rockauto_reviews_bbb.pdfIn PDF document text
    • https://cdn.sqhk.co/voxoduvi/bphijiV/i_will_cross_the_bridge_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/juvebuzizej/hgYOMhg/49145340986.pdfIn PDF document text
    • http://oneshops.space/7491208204105xut.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/1gfjajc/15325989113.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/fjgdhbT/banner_saga_2_lundar_choices.pdfIn PDF document text
    • http://poposiruta.mywebcommunity.org/what_to_write_on_verification_of_property_condition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://livirava.atwebpages.com/play_a_game_of_chicken_meaning.pdfIn PDF document text
    • http://miganuvag.myartsonline.com/rinobofukopenor.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11343 4984 bytes
SHA-256: bd97f859253e7e71d3438e93f6d3a6543f986bdc1ec7fe8a704980ff66623cc3
font_01_sfnt_off0001240b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1240B 11296 bytes
SHA-256: 4e3a0ec2db03fe079bea4e31ddce00066a7f5c42d5e865b9f85988cc0247de47

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