Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad84f206d8b95ef…

MALICIOUS

PDF

89.2 KB Created: 2021-06-01 12:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: f73824cf5e00af292eeb1b1b9730ab6d SHA-1: f54faa10fb37da4c3a0fa284c56874333a5e180a SHA-256: bad84f206d8b95ef8f84775e51d7cae26591b5ffbddb64551d5f75a9083c63a7
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on 'https://pixomot.ru/pbw?utm_term=how+much+is+solidworks+flow+simulation', indicating a likely phishing or scam attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests a malicious intent to redirect users through a network of disposable domains. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence score point towards a malicious document designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://pixomot.ru/pbw?utm_term=how+much+is+solidworks+flow+simulation PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fadoposapat.pbworks.com/w/file/fetch/144446514/molarewef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f34bed12-dbfd-459e-8799-a06b2c1c9523/dd_3.5_list_of_metamagic_feats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a15bdef-5423-41d2-98fa-bc546b4b4f43/rubovudiweko.pdfIn PDF document text
    • http://sazupamufode.pbworks.com/w/file/fetch/144445935/winojekulurewexe.pdfIn PDF document text
    • http://taxexuwej.pbworks.com/f/sahih_bukhari_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ac5aa9-74dd-4cd0-8fe1-5f669214d413/vampire_diaries_season_8_release_date.pdfIn PDF document text
    • http://xuvabufoj.pbworks.com/f/how_to_cite_a_mla_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa4d4c9c-cb08-4186-9341-a1a5fe3d594d/tezeraziradubodetinudero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bdd15a0-95c9-4424-9fb8-ad18499cb1b1/how_much_does_the_highest_paid_anesthesiologist_make.pdfIn PDF document text
    • http://tiduxikuve.pbworks.com/w/file/fetch/144421821/new_bible_dictionary_3rd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/059aa789-5ec7-46c5-82a2-0e556e8f57c1/how_to_reset_epson_artisan_810_printer.pdfIn PDF document text
    • http://zeladejan.pbworks.com/w/file/fetch/144442869/where_to_learn_blacksmithing_ffxiv.pdfIn PDF document text
    • http://siruzosu.pbworks.com/f/winiminugixukuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6915c56-0eb9-4032-845d-0e7b61c88054/63174045824.pdfIn PDF document text
    • http://gosirata.pbworks.com/f/call_of_duty_modern_warfare_3_mods_ps3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0746651e-a7eb-41be-a520-fe9be3e9b1b1/10459793863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/555d2ecf-9b48-4ae6-8406-22f030f7ba2a/2541498237.pdfIn PDF document text
    • http://wuvebag.pbworks.com/w/file/fetch/144427827/baixar_manual_do_pregador_em_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d55052-19b1-46a4-8e4c-b2f2ecc27c24/when_to_capitalize_professor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19d1283-5fd5-45cd-9011-393ed3f8e93f/how_to_activate_jawbone_up2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27970ccf-2dbb-442f-991f-960bc9f01ae5/oracle_sql_query_to_get_date_in_mm_dd_yyyy_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28018777-79d5-4f83-9691-df75e10712ce/saxenugimekozinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6052d85-723f-415a-afec-5171be42c578/juboravipifuzezapade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef49a11b-28cd-4c8d-8d6d-c1b3bf66c277/download_attack_on_titan_season_2_end_of_the_world_full_movie.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FD 4492 bytes
SHA-256: 05cc3529415707d815d9873d28a480e0f44383b4fc6828dc1d27161e15acdfb2
font_01_sfnt_off0000f9a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A8 5376 bytes
SHA-256: 6bcb20c5f390f62f02c1c89a94440dc24078c437ba5402bb29052158b34f557b
font_02_sfnt_off00010bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD0 18572 bytes
SHA-256: 180257c28d6139644ecc2915abaf9322e6b01e71c0dcc7f0ce27bdbdbd36f29f
font_03_sfnt_off00013d7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D7A 16528 bytes
SHA-256: 94ab1cc06144e41103d321e31f12a96a521228da287b5bfe22ebb12a40c731ab

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