Malicious PDF — malware analysis report

Static analysis result for SHA-256 96682080d881db6d…

MALICIOUS

PDF

79.2 KB Created: 2021-03-11 08:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 40d4f9dceedf55d1a587671e55dc684c SHA-1: 15ce498b0a0685e28df9b665d111e08d4af9b9f2 SHA-256: 96682080d881db6d65db6226212d9b4319eecef8b51e4ca49e0612b28947fa06
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/123?utm_term=game+chinese+chess+offline PDF link annotation
    • http://it50discount.pro/jiromazasulojefidic0vbb.pdfIn PDF document text
    • http://favanitum.iblogger.org/buddha_bar_music_album_free.pdfIn PDF document text
    • http://ueuniti.xyz/mission_mangal_movie_hd_video_song5rixq.pdfIn PDF document text
    • http://zoomita.space/ielts_6.5_equivalent_to_toefl1p1x8.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/8igC8eD/pandemic_definition_biology.pdfIn PDF document text
    • http://nat-fru.space/pinball_felt_leg_protectorsacamb.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/pioneer_av_receiver_vsx-522_wont_turn_on6myl2.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/bijjeW0/abstract_sculpture_art_history.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/baxekojojexusol/apron_pattern_free.pdfIn PDF document text
    • https://36fc1fe3-b646-4cc1-b6e9-de51469aea27.filesusr.com/ugd/3eb4bd_7e2d048ae21148ab976e24981d732993.pdf?index=trueIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_1a153e0d3ea5474babb86e2f137e740f.pdf?index=trueIn PDF document text
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_bc1206ae5ef34e5aa0fa12ca25409645.pdf?index=trueIn PDF document text
    • https://a694a867-b0fa-45cd-b082-7f9abf80b1a7.filesusr.com/ugd/430cb2_344702ae5818479cbb8dcc6a27660020.pdf?index=trueIn PDF document text
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_34f3eca153734ff297730ee9e07371a4.pdf?index=trueIn PDF document text
    • http://melaworogafema.epizy.com/felag.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/wenagogajegalagaros.pdfIn PDF document text
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_c979b08fe537494fa7153fee26dce61b.pdf?index=trueIn PDF document text
    • https://5b2b9875-3923-4577-9ef6-0527498c95e7.filesusr.com/ugd/4e6dd5_1328e8a4712a4f8ebf49945e40ae2578.pdf?index=trueIn PDF document text
    • https://a98f38e8-5810-4fc9-be6a-c3d78c7c4f9f.filesusr.com/ugd/921909_f7e302c1f84045c7b45e0d45c91e3513.pdf?index=trueIn PDF document text
    • http://wuwovedivaz.rf.gd/bhai_song_whatsapp_status.pdfIn PDF document text
    • http://rubaporejolo.rf.gd/resonance_caution_money_online_form.pdfIn PDF document text
    • http://lexuwusifo.epizy.com/velulaliseluwux.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF3 5056 bytes
SHA-256: 9bcb71b1e9e9127b8c431bec288f1b454d4917c2346cc6e4181954989bb012d8
font_01_sfnt_off00010c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C05 10416 bytes
SHA-256: 05e471fa1a81c8ace088449ee1c8a3b31996fffccc4cebbb873b2ee678343b3b

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