Malicious PDF — malware analysis report

Static analysis result for SHA-256 a07e560cc6b1dd19…

MALICIOUS

PDF

78.0 KB Created: 2021-02-25 02:35:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e7a44bd6a40995516518c40248bc98c2 SHA-1: 9add12f7aafe28f478a5929888f195487d7670e3 SHA-256: a07e560cc6b1dd19a65a44593caafbf60051b44efeae08efa0f6199b0e4ce581
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, including one pointing to 'bologen.ru', which is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains text related to 'Washington state department of health covid testing sites', suggesting a lure to trick users into visiting 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://bologen.ru/strik?utm_term=washington+state+department+of+health+covid+testing+sites PDF link annotation
    • https://cdn.sqhk.co/dojopaxitovi/ifjfjj8/basketball_goal_walmart.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/beats_by_dre_lifetime_warranty.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/tuzibuwude.pdfIn PDF document text
    • https://cdn.sqhk.co/vetedaxuzele/eNoKjaf/nuxuvawutirozawekiruve.pdfIn PDF document text
    • https://cdn.sqhk.co/lilovenodi/eiYjfWC/23641172038.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/70361610785.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/kodak_eis_hd_1080p_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/WMQvKIe/huey_p_newton_quotes.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/taxasurunebirinetofiz.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/chamberlain_universal_remote_genie_intellicode.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/40754254113.pdfIn PDF document text
    • http://medupaj.iblogger.org/divinity_original_sin_2_final_fight_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvarijes.atwebpages.com/how_do_i_put_my_maytag_washer_in_diagnostic_mode.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/96484124840.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/games_like_fortnite_online_no.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/20362093572.pdfIn PDF document text
    • http://gedokimisizat.rf.gd/timidosoluxutoneli.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_off0000f1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D0 5644 bytes
SHA-256: 6a577e98e55f473b8b4ff0f383eba60efd283b2cd23536979d3714036fedbf60
font_01_sfnt_off000104ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104ED 10924 bytes
SHA-256: 141507746ff1350a6ba8df364eec789d9cd9a3e1efbb5913d9be60b83f96fe8e

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