Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f91964361ef34f…

MALICIOUS

PDF

114.3 KB Created: 2021-06-10 06:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: db98f990295f7af45f8c9fae7055bd41 SHA-1: e66318ab4f53f53bed7cbe42bfc6ff9eca28900d SHA-256: 06f91964361ef34fae67bfa1aca8458ac2364a093cae94af93429821e8ddcaec
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 0.9991

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://queure.ru/pbw?utm_term=pati+patni+aur+woh+full+movie+download+by+filmywap PDF link annotation
    • https://mewupigokudupez.weebly.com/uploads/1/3/0/7/130738506/kinuridavisaf-ranakafudiba.pdfIn PDF document text
    • https://fexolemigelewi.weebly.com/uploads/1/3/4/2/134235379/gejodubanewutedi.pdfIn PDF document text
    • https://buvitefano.weebly.com/uploads/1/3/4/1/134131500/vuvujefisedunarogedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_601f57e8b04cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379471/normal_602d2297594bf.pdfIn PDF document text
    • https://gijegemolu.weebly.com/uploads/1/3/1/3/131380899/4b6c52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384821/normal_5feb84226da79.pdfIn PDF document text
    • https://derejesi.weebly.com/uploads/1/3/4/3/134388634/563221.pdfIn PDF document text
    • https://zapodebas.weebly.com/uploads/1/3/1/4/131437158/d230e39ec.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
    • http://fedorahosted.org/lohitIn PDF document text
    • http://jetubabup.pbworks.com/f/narokanokebinarunugapan.pdfIn PDF document text
    • http://savavaze.pbworks.com/f/salvage_auto_parts_montgomery_al.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91aff5d-ec2d-4d2e-a523-c4844fea4f03/watch_novoland_eagle_flag_ep_1_eng_sub.pdfIn PDF document text
    • http://kunozulig.pbworks.com/w/file/fetch/144547884/how_to_find_your_ring_size_uk_online.pdfIn PDF document text
    • http://tedadopite.pbworks.com/f/68027616210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aa36a05-e037-4769-8aba-5bc816cfc542/6987232248.pdfIn PDF document text
    • http://tedadopite.pbworks.com/w/file/fetch/144663930/3341073409.pdfIn PDF document text
    • http://lovizabodi.pbworks.com/f/47102234892.pdfIn PDF document text
    • http://wiliser.pbworks.com/f/lifespan_development_boyd_download.pdfIn PDF document text
    • http://murenet.pbworks.com/f/descargar_tres_veces_tu_pelicula_completa_en_espaol_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/768c4260-a3af-499d-b0ea-b373a5a413ba/where_to_farm_argon_crystals_2020.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E26 3920 bytes
SHA-256: 91172179cc6e7e811647913cf37047af8ee72ef6b54b5b7b39b5e42f8ff59cad
font_01_sfnt_off00014c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C15 5380 bytes
SHA-256: 4983d183f66e12f7c6c9b5ddc710c1c915dfe1a17628273680035b443aabbd26
font_02_sfnt_off00015e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E41 11516 bytes
SHA-256: 5ef7ddcb1c111532c568101bcb13e1a016c1ad8380fe084cd05f08f24f7fc2f2
font_03_sfnt_off000184a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184A9 16320 bytes
SHA-256: edf4c49cf6f3ba5ac592ebb9405fc71038481385a733582eb0c8158defe4343d
font_04_sfnt_off00019a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A80 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
font_05_sfnt_off0001a880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A880 5080 bytes
SHA-256: e9bde2a5542cbfe52a6d4d71b9b1856dda9367aa7c04300eab5fc6f1194eedf8