Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e64fc8bb66d93c…

MALICIOUS

PDF

75.8 KB Created: 2021-04-18 20:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: bc5429e3f09ec09d51763fbb6e69926b SHA-1: 9999ed6581762c833d4e3c7b49dd7ad88a2a08eb SHA-256: 53e64fc8bb66d93cd3030b60a7fb6c898a0a8ec7a0658eff71c003d572eedea5
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous external URIs, with one prominent URL pointing to a phishing site disguised as a recipe book. The presence of embedded URLs and the overall structure suggest an attempt to redirect the user to a malicious domain for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/strik?utm_term=magic+bullet+recipe+book PDF link annotation
    • https://regamozinog.weebly.com/uploads/1/3/0/9/130969170/7881400.pdfIn PDF document text
    • https://cdn.sqhk.co/rapaxino/fgciege/poneturamorolabil.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/29463565740.pdfIn PDF document text
    • https://woperuxotuxolo.weebly.com/uploads/1/3/4/8/134849923/wabokuwusizepa_nodabunotegimab_nedutebog_vupolenum.pdfIn PDF document text
    • http://xapowuxif.mywebcommunity.org/how_old_is_ash_pokemon_sun_and_moon.pdfIn PDF document text
    • https://nexuragero.weebly.com/uploads/1/3/4/7/134751893/6312149.pdfIn PDF document text
    • https://fagowegegex.weebly.com/uploads/1/3/5/3/135315381/8058439.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/E9hcicc/69177378207.pdfIn PDF document text
    • http://wunuvuzixuxi.getenjoyment.net/64688910646.pdfIn PDF document text
    • https://jodavetofa.weebly.com/uploads/1/3/1/4/131438562/medepifaki.pdfIn PDF document text
    • https://cdn.sqhk.co/pazaxefuma/hgidGhd/vapagatajexosegaj.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/fadedosi/best_rifle_reloading_powder_for_308.pdfIn PDF document text
    • http://pusebirenox.myartsonline.com/nusukorozixi.pdfIn PDF document text
    • http://neloralo.myartsonline.com/formulae_and_tables_for_actuarial_exams_2nd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/661792e3-1e1e-4cd2-87af-7fdaf534be3c/what_are_the_12_steps_of_recovery.pdfIn PDF document text
    • http://taguloxutenafol.myartsonline.com/3099830521.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/how_to_pass_grammar_test.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/29560780623.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/muzamefiv.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/aggressors_of_dark_kombat_rom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ff2b99-9918-4f1c-bfb2-eeb3f44b720a/tesda_forklift_training_requirements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54cba29e-408c-42ec-ad3d-c12d9c2dbe3c/wuliwaxegefugelugoduvon.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_off0000e89e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89E 5132 bytes
SHA-256: 0c118eb0079b2bc0520da68ed34108e9c84d015999bbf898c399e45c090d3b9d
font_01_sfnt_off0000fa33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA33 11532 bytes
SHA-256: 6c13e2081dac4ac574dd3c1e03364f64d3d01490c98a09f2b245618f90dfe7c9

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