Malicious PDF — malware analysis report

Static analysis result for SHA-256 99922d8202ab95bf…

MALICIOUS

PDF

75.9 KB Created: 2021-04-06 20:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1bc3ef034eba30633d364294ef370ccf SHA-1: d5918146d4a41e2cf6a66016d26aa7e2b60812d5 SHA-256: 99922d8202ab95bfedde6c87265aca0ae82d148fb4dd5a95a5112f1b158d8bcf
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious URL, disguised as search results for song lyrics. This suggests a phishing or social engineering attempt to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/strik?utm_term=david+bowie+the+stars+are+out+tonight+lyrics+meaning
    • http://fiwupejebibogu.sportsontheweb.net/villanelle_novels.pdf
    • https://cdn-cms.f-static.net/uploads/4366620/normal_605da9905bf93.pdf
    • https://cdn.sqhk.co/letareximo/gdjbhbR/word_meaning_pet_lover.pdf
    • https://cdn.sqhk.co/jarixizotib/ticghgi/43121901290.pdf
    • https://cdn-cms.f-static.net/uploads/4415770/normal_6038270d524ba.pdf
    • https://cdn.sqhk.co/fapulelenuvi/jihggzk/astuces_de_grand_mere_rhume.pdf
    • https://cdn.sqhk.co/wetilusogaki/hbhbFLq/pokemon_alpha_sapphire_3ds_emulator.pdf
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5fe5b8a6d4d9f.pdf
    • https://cdn.sqhk.co/zatejurix/fKWyugh/tuvusafumefitego.pdf
    • https://cdn-cms.f-static.net/uploads/4388065/normal_5fd90f7ea8268.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zodiripek.myartsonline.com/45181432648.pdf
    • https://uploads.strikinglycdn.com/files/28e92c76-41ab-4818-a682-a19f6ba79e0f/how_to_develop_a_strawman_proposal.pdf
    • https://uploads.strikinglycdn.com/files/6668b5aa-7e11-4837-b8e1-62c5cb3ba5b5/tosewabulubipuletafonuxo.pdf
    • https://uploads.strikinglycdn.com/files/41e731a2-9cee-4401-87dd-3b0bb75a01ab/burger_king_8_chicken_nuggets_calories.pdf
    • https://uploads.strikinglycdn.com/files/bd7e4eec-de06-4ce1-bf32-55110a75f138/apc_smart-ups_1500va_lcd_230v_with_smartconnect_smt1500ic.pdf
    • http://tuminexozuvino.atwebpages.com/jalabevokamawo.pdf
    • https://uploads.strikinglycdn.com/files/5082305b-b725-419a-b810-7a2005b8ebfd/pobasuzigewuku.pdf
    • https://uploads.strikinglycdn.com/files/77134120-009a-4c45-b744-9805f28634cb/besefi.pdf
    • https://uploads.strikinglycdn.com/files/ec308ff6-4a2a-4634-a38e-a9498bd54020/mavupusafisola.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_off0000ea3a.bin
bd499cdf74317da1308bcd433a6de00f051bd0b2205eddc03e87733d6d89cbaa
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3A 5744 bytes
font_01_sfnt_off0000fdc2.bin
7b6ae79ba5d45e5a56dc2f30130564f078979d44f951762a4a83455298f931e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC2 10768 bytes