Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d39b100d3730cf…

MALICIOUS

PDF

78.3 KB Created: 2021-02-26 15:41:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 426b58b1fff17cfb1be74fff7034ff43 SHA-1: 513be61605a3d87d2236f4cb2934a8667e088b53 SHA-256: c7d39b100d3730cfb31d3f3376765c9fe50e8f372daff596d9c87ec4e7751444
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which, https://xajibur.ru/strik?utm_term=will+the+other+percy+jackson+movies+be+on+disney+plus, is flagged as suspicious and likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to 'percy jackson movies', suggesting a lure to trick users into visiting the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://xajibur.ru/strik?utm_term=will+the+other+percy+jackson+movies+be+on+disney+plus PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484820/normal_602b98d28e777.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386094/normal_5ff38bdf576b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_6019bd1f6fbf3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452392/normal_60073ee912369.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_6030577d61532.pdfIn PDF document text
    • https://cdn.sqhk.co/zapakolozu/he5nyq4/bacon_escape_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495034/normal_5ffa587c5d879.pdfIn PDF document text
    • http://ponaleke.iblogger.org/kisosafotodawivuge.pdfIn PDF document text
    • http://fogarapisow.22web.org/37514021346.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470029/normal_6004b7e15f665.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/67DajbR/modern_mania_wrestling_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/2rrhcp4/ted_lasso_review_ign.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nemebikox.epizy.com/angular_7_bootstrap_form_validation.pdfIn PDF document text
    • http://rewejuvozotu.epizy.com/52121920141.pdfIn PDF document text
    • http://favuzokusom.rf.gd/the_contrarian_s_guide_to_leadership_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/luparabibujumike.pdfIn PDF document text
    • http://kaveled.epizy.com/rujolopo.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/cidco_online_form_for_house.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/74869762764.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_off0000f350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF350 5768 bytes
SHA-256: 954fce61717f632da763bba651836e73c7b6e5469939b694b514bd979b1d9ee6
font_01_sfnt_off000106d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D9 10696 bytes
SHA-256: 48908ffca70ba4398dbf63617192abbb54e349ef7de09bc7c86d0817019dd453

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