Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfbb029e178388c0…

MALICIOUS

PDF

77.0 KB Created: 2021-03-14 09:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76ba2dda9f3cb807f1a7eb34928d0d9c SHA-1: 97b7ca165277d979e796753354aca6ee511662b1 SHA-256: cfbb029e178388c00585c7b96453407ef01a7875cc4fb287f0b0b24ea8982096
104 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, with heuristics indicating the presence of external URIs and a visual download button lure. The embedded URL `https://bologen.ru/wix?keyword=cheats+for+homescapes+iphone` suggests a phishing attempt disguised as a download for game cheats. While no scripts were explicitly extracted, the PDF structure and malicious indicators point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=cheats+for+homescapes+iphone
    • http://nikecortez.net/wiselitcmah7.pdf
    • https://static.s123-cdn-static.com/uploads/4369315/normal_5ff65889137a5.pdf
    • http://prodson.space/twilight_new_moon_full_movie_hd_downloadobadn.pdf
    • http://theharaka.online/how_to_solve_scale_drawing_math_problems39414.pdf
    • http://vilelares.iblogger.org/puriv.pdf
    • http://instapodarok365.site/what_are_effective_communication_skills_in_healthcareh3iii.pdf
    • http://uuuuull.space/lord_of_the_rings_chronological_order_booksbv3rq.pdf
    • https://cdn-cms.f-static.net/uploads/4464877/normal_5fe64bb8526b8.pdf
    • http://xteenware.online/gonobaxugexevorovomavogmk0qq.pdf
    • https://static.s123-cdn-static.com/uploads/4445550/normal_5ff5340857429.pdf
    • http://paypallsecurity.com/bhaigiri_dialogue_status_video5ct5z.pdf
    • http://copyright-central-media.com/piriformis_syndrome_how_to_sitgbblh.pdf
    • https://cdn-cms.f-static.net/uploads/4421360/normal_600bb0fb9d38a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_69f665b3191c45518a88664fc4561629.pdf?index=true
    • https://920f4c01-5fd6-4c40-8b27-b99972fecb60.filesusr.com/ugd/d63aaf_a7594f20b24d47ecae6c80b9dbffc57b.pdf?index=true
    • https://b54663a3-ff9d-4122-b75c-69b71428c9b0.filesusr.com/ugd/cfa91a_201a99b9a1fb44518bccb25e1f2697d1.pdf?index=true
    • http://duwamiwimi.rf.gd/static_malware_analysis_report.pdf
    • https://54e283d8-6946-47af-b6e3-c78582312647.filesusr.com/ugd/22cd47_62062a9446df43a79395befc28377bd6.pdf?index=true
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_668bd021d5cb4db7866678d06a95a6c0.pdf?index=true
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_7827265d3ecf4a8f97784f68efa793db.pdf?index=true
    • 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_off0000f08b.bin
cf7bd7f1aa2069a48eda4bf4f39e7394a042ab210e6c5bf7fc7b57325191e449		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF08B 5128 bytes
font_01_sfnt_off000101d0.bin
73f5b3ad8ba267578b43d613cc6fa2fc01904a62ae7b250dd99c1d5a66a9aa39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101D0 11208 bytes

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