Malicious PDF — malware analysis report

Static analysis result for SHA-256 673d4401a5ac2fac…

MALICIOUS

PDF

73.3 KB Created: 2021-06-11 05:20:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67802d7ccda76d82f4a07b85cfbc6774 SHA-1: 522e12a809ee9fc6992a4592e45eed630d233de9 SHA-256: 673d4401a5ac2fac91760d9de63667b59a3b5a3dd92808cdb26728a53af52f21
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading music, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://wastran.ru/pbw?utm_term=gurlez+akhtar+all+song+download+djpunjab
    • https://dunifavopugi.weebly.com/uploads/1/3/5/3/135312205/7908275.pdf
    • https://xijaxerunoseme.weebly.com/uploads/1/3/4/3/134306079/tojuwef.pdf
    • https://cdn-cms.f-static.net/uploads/4391920/normal_6023a74cb936c.pdf
    • https://static.s123-cdn-static.com/uploads/4381321/normal_5ff1917aaac4f.pdf
    • https://ziremaga.weebly.com/uploads/1/3/4/8/134850228/sipijobejuverunuju.pdf
    • https://zukazitorixum.weebly.com/uploads/1/3/4/7/134772558/damapati-jolab-mogimim-nofulomo.pdf
    • https://guxovegetixewaz.weebly.com/uploads/1/3/2/3/132302910/4220483.pdf
    • https://jitobogi.weebly.com/uploads/1/3/7/5/137505353/5900074.pdf
    • https://cdn-cms.f-static.net/uploads/4470222/normal_60567e5eae4d6.pdf
    • https://rulafusojuxibaw.weebly.com/uploads/1/3/4/2/134265871/b6863ac6a9975b.pdf
    • https://zewogamiwivu.weebly.com/uploads/1/3/4/3/134313422/630ec3.pdf
    • https://static.s123-cdn-static.com/uploads/4428052/normal_5fed5b9d96196.pdf
    • https://mevagosulen.weebly.com/uploads/1/3/5/3/135391340/953df250307.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e5b96806-f1a2-4977-a887-306a6058b6b2/babofiribejul.pdf
    • https://uploads.strikinglycdn.com/files/d43290e1-bbfe-4d9a-917d-6e7cdd117bf8/fedex_non_cdl_driving_jobs_near_me.pdf
    • https://uploads.strikinglycdn.com/files/3d68d50d-82ce-4484-a066-c9e1ce8a710e/can_i_run_sudden_strike_4.pdf
    • https://uploads.strikinglycdn.com/files/0c1b1e4f-c5b7-4965-b2ff-245b03db489f/troy_bilt_42_mower_deck_belt_replacement.pdf
    • https://uploads.strikinglycdn.com/files/d2ffc95e-8a5c-493e-8c21-b84271e4084c/65368860927.pdf
    • https://uploads.strikinglycdn.com/files/9cbd4bba-7bdc-49ea-8485-b0a4445375ac/cronica_de_una_muerte_anunciada_personajes_descripcion_fisica.pdf
    • https://uploads.strikinglycdn.com/files/97041504-7856-49b9-b385-3c8944074226/the_end_of_great_game_book_review.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_off0000dfa8.bin
81ffd812b777a1b21d1d95e93a01ecdc5c411387411c15bff8239f3656c8890d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA8 5672 bytes
font_01_sfnt_off0000f309.bin
080fe032d6279078636c86166dd0b4eab378d718145c6785cb84d307dd593bb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF309 10756 bytes

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