Malicious PDF — malware analysis report

Static analysis result for SHA-256 82559a6ce539f7c0…

MALICIOUS

PDF

79.2 KB Created: 2021-03-19 03:32:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0c9355c521cf33290743c83db7fe7f2 SHA-1: e1f44f69f5d8c919c4def9d54141c0d2d852e9e2 SHA-256: 82559a6ce539f7c02e43312f954d2830258c2d8311b72d8eeb953348d591b61c
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links to external websites, many of which are hosted on disposable domains, suggesting a link farm or redirection scheme to deliver malware. The document body, though obfuscated, appears to be a lure related to search queries, further supporting a phishing or social engineering attack vector.

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://crophysi.ru/wix?keyword=human+body+pushing+the+limits+sensation+answers
    • http://fitness-ital.fun/doa_setelah_sholatihjjf.pdf
    • https://bokirises.weebly.com/uploads/1/3/1/6/131607331/supifutuza.pdf
    • http://form-lnstagramcopyrightservices.com/how_do_you_calculate_ending_finished_goods_inventorytl8f9.pdf
    • https://wadonado.weebly.com/uploads/1/3/4/6/134677460/kofinomoruruw.pdf
    • http://henrysavbr.site/instagram_mod_apk_more_followerscrqm7.pdf
    • http://buyervannakupitvsem.xyz/80483313558dj30s.pdf
    • http://dle-tpl.site/business_plan_sample_docgxzq4.pdf
    • http://wanididezaj.getenjoyment.net/disadvantages_of_authentic_assessment.pdf
    • https://rixedevo.weebly.com/uploads/1/3/5/3/135306589/b69fc0159ed3274.pdf
    • http://reduslimitalia.website/spoofing_jurassic_world_aliveipx2l.pdf
    • http://govnososal.xyz/account_balance_definition_dictionarystgur.pdf
    • http://bonboxstudio.com/the_magic_of_belle_isle_summaryu1l65.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://filirepakej.epizy.com/pusotinopijijigolumadepa.pdf
    • http://dasutako.rf.gd/3985584263.pdf
    • http://masemipeba.myartsonline.com/approaches_and_methods_in_language_teaching_book.pdf
    • http://bubaregelore.rf.gd/rarobofegufiridivigufam.pdf
    • https://uploads.strikinglycdn.com/files/4dd10c98-5d00-4e44-bba3-3c060ab8157f/back_to_eden_lyrics_gospel.pdf
    • https://uploads.strikinglycdn.com/files/68dc5bef-9cf8-40df-b310-11595eff373a/serial_number_bandicam_2019.pdf
    • http://kepofif.onlinewebshop.net/38096147295.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f743.bin
f5882ac369853b08f866a5e06b36f475e742358cfab13a190aec556530f6c179		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF743 5668 bytes
font_01_sfnt_off00010a6d.bin
525ccd8caa0d5aadf8bd9157444b185c56ca95ae8d0e8cbf307b95e5ff30add8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6D 10680 bytes

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