Malicious PDF — malware analysis report

Static analysis result for SHA-256 024e6b65eaeeb2bc…

MALICIOUS

PDF

78.0 KB Created: 2021-03-11 03:57:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 089ba18a87f969b0d314d50eb3547ff8 SHA-1: 98391072201394e5938f0bd38cfb211820d8682b SHA-256: 024e6b65eaeeb2bcece31b3252c4846ec170a54b7b66f617edb4da765b4111ba
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing and trojan threat. It contains a large number of external links, suggesting a link farm designed to redirect users to malicious content, likely for downloading further payloads. The document body, though heavily obfuscated, appears to be a lure related to 'sheet music pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/award?keyword=agua+de+beber+sheet+music+pdf
    • https://cdn.sqhk.co/texafikogot/jc6jbje/79035384896.pdf
    • https://cdn.sqhk.co/kigimole/hhdgc9Z/tokyo_ghoul_kaneki_centipede_wallpaper.pdf
    • https://cdn.sqhk.co/lopumilekana/2ihhhig/65131711141.pdf
    • http://pumorux.medianewsonline.com/is_there_a_letter_j_in_aramaic.pdf
    • http://nozumupi.medianewsonline.com/ravimobagejirenesubine.pdf
    • http://fruit-ital.space/juwiwinosumomawawesetetz9uo.pdf
    • http://mebelrostov.ru/72651659075neg6e.pdf
    • http://funseeds.site/free_powerpoint_greeting_card_template1j22m.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zutaturusix.myartsonline.com/17631782494.pdf
    • https://s3.amazonaws.com/tinajabizoreguf/circus_vector_free.pdf
    • https://uploads.strikinglycdn.com/files/9a7c47ef-52dc-4552-8671-b89d22f4a465/23528486018.pdf
    • https://uploads.strikinglycdn.com/files/e3f0e5cb-92b2-421d-b17f-ecca0b4ffc6a/1907879462.pdf
    • https://s3.amazonaws.com/fatikonavori/64500070841.pdf
    • https://uploads.strikinglycdn.com/files/668eaf6f-d747-442c-98db-2833c2f07ab1/united_states_history_trivia_quiz.pdf
    • https://uploads.strikinglycdn.com/files/6fa3ab98-9c95-42b2-b97f-9b1a7a67f412/2007_ktm_450_exc_owners_manual.pdf
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_2dd61d5a8063447299c375690e1143e5.pdf?index=true
    • https://38aad9b5-7a72-45b8-ac81-9fe73ce82000.filesusr.com/ugd/08338c_85c5e0cbbf464e128806256242ec9c6a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e459308e-fe3e-4187-8e32-79ac4cbcd93a/kirby_g5_spare_parts.pdf
    • https://s3.amazonaws.com/rudelazifizuvo/64888853522.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_off0000ebee.bin
8a2f9c5610ab4c899cb16b9f1db7eede42a7fb875eb1e76abd1733bb93d999ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEE 5664 bytes
font_01_sfnt_off0000ff07.bin
d385449fe28274af7e78bbb058257a4077210497ea3e148cb3c6a1c389846d1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF07 14064 bytes

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