Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77208661f5d778d…

MALICIOUS

PDF

74.3 KB Created: 2021-01-31 09:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 41b009064049060096e70de44204059a SHA-1: e18dae989f86d6b475e2a30dce5bec5a211c2bd5 SHA-256: f77208661f5d778dd55ee6af7e42acf7d9b3ed3ba46bf8ca86cadd3d4c1315f8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating an external URI and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The embedded URL, 'https://baarspo.ru/123?utm_term=asphalt+8+hack+windows+10+2019', is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains keywords related to 'Asphalt 8 hack windows 10 2019', reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/123?utm_term=asphalt+8+hack+windows+10+2019 PDF link annotation
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/541229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450438/normal_600dc843d7dfa.pdfIn PDF document text
    • https://bexopugizabon.weebly.com/uploads/1/3/4/0/134042324/5249691.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373261/normal_5ff983225a907.pdfIn PDF document text
    • https://jivikusobule.weebly.com/uploads/1/3/5/3/135326696/bixukefozufidup-jusun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376858/normal_5fe12cafae083.pdfIn PDF document text
    • http://kiwedoro.66ghz.com/directors_report_requirements_companies_act_2006.pdfIn PDF document text
    • https://cdn.sqhk.co/susotizakaxe/gUggRK9/game_of_dragons_kingdom_training_simulator_3.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/jcPugcP/46154333235.pdfIn PDF document text
    • https://cdn.sqhk.co/wojusipi/fY13u5X/flying_gorilla_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/rgjifhc/vukixifuwolaf.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/PigSnhh/gupumopuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pusori/duvoponigurefel.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/azur_lane_retrofit_guide_reddit.pdfIn PDF document text
    • http://lefivagalowo.rf.gd/zokerifuzigubonatamizigot.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/63937128615.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/62598051524.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_off0000e19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19F 5888 bytes
SHA-256: fb63093f96c6f46ac888e2f1b3382e5ec45f6c4174db0eecec0298c5b95a7792
font_01_sfnt_off0000f5b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B9 11276 bytes
SHA-256: 4567541b44c96b7c4557e3a0ee76ab4b2d754a2a983d83aade97344252e26b1e

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