Malicious PDF — malware analysis report

Static analysis result for SHA-256 268464be948be586…

MALICIOUS

PDF

161.9 KB Created: 2021-04-01 04:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 66c533704aa91bc82bd38538ad28d96d SHA-1: af47e5a741e53777c3e0ea3e3a57c51b023f5a85 SHA-256: 268464be948be58661b43fdfb7e6b894a21dd58b819a6709d181c02bd0b34e51
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://nipisod.ru/aws?utm_term=dolphin+emulator+wii+classic+controller PDF link annotation
    • http://gamowenugeg.sportsontheweb.net/99561012090.pdfIn PDF document text
    • https://cdn.sqhk.co/miwizawi/NiaFZbJ/nanefurikeg.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofigeniso/hjygggM/dj_drops_samples_sound_effects.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/whdjfjc/xurapadoje.pdfIn PDF document text
    • http://pexulisinipev.sportsontheweb.net/88027473206.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://041c2bdd-267b-4995-9d72-d071cf2c2b2b.filesusr.com/ugd/ba0b69_08a69ba481dd4427acc3fbe1dac5bf11.pdf?index=trueIn PDF document text
    • http://lusiromipu.epizy.com/payaliya_bajni_lado_piya_song_mp4.pdfIn PDF document text
    • http://vominobig.rf.gd/raj_kapoor_anari_movie_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bfa63c2-1515-428b-96bd-721316929e58/brother_hl_2170w_all_lights_flashing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/636aecf7-410b-4e9e-9ce0-dcd7017ba156/mojivenamarebugokufubusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab321bd-da7d-46ce-bf27-3369ce8da929/bisilonavurodeta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bdc3292-1bf5-40a8-b9bf-ffda2d1fd82e/por_qu_porque_o_porqu_cmo_se_escribe.pdfIn PDF document text
    • http://febarufowit.epizy.com/how_to_clean_dirt_devil_power_max_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25cc9b9f-1526-48cf-9ea8-40fd08c5dc9b/67166779618.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ea7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EA7D 21768 bytes
SHA-256: b54e72622f38feca35689acc587850dd0a64ac76cb9ae7ca8cac25951b19ba37
font_01_sfnt_off00022fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22FD4 5148 bytes
SHA-256: 734f4dd8a51e88a85c2277e57a84b354980a9112f8b8511d6f62e82f4125f8c5
font_02_sfnt_off0002412d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2412D 12836 bytes
SHA-256: 37514263589e9171ac7541ab44efb971e385627116c0fc71e58d6b3580bf1c34
font_03_sfnt_off00026be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26BE3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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