Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9aef003b6b22e9…

MALICIOUS

PDF

84.8 KB Created: 2021-04-08 22:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6ecc962b4c624e7ab6e4772fca820e0e SHA-1: eea477660420b94fcab30cc2123a49ee1a6ce61c SHA-256: fd9aef003b6b22e9ccbbc58bcf81c869d27aa6217667cbf295ae4dfd57eed513
246 Risk Score

Malware Insights

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

This PDF document is identified as a credential phishing lure impersonating HSBC. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to obscure the final phishing destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to steal user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://dagevonedil.weebly.com/uploads/1/3/4/7/134736192/d687023ab4946.pdf.
  • 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://dugedepap.ru/strik?utm_term=list+of+stockbrokers+uk PDF link annotation
    • http://gbo.guru/siposexabetavekajidypyab.pdfIn PDF document text
    • http://copyrightsupport-ig.com/club_car_golf_cart_charger_plugtf78o.pdfIn PDF document text
    • https://dagevonedil.weebly.com/uploads/1/3/4/7/134736192/d687023ab4946.pdfIn PDF document text
    • https://loseseseveru.weebly.com/uploads/1/3/0/8/130813975/liwem_kilatog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470029/normal_606e60244c766.pdfIn PDF document text
    • http://reduslimer.website/95362549718ndh15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_6064f49d5a4b4.pdfIn PDF document text
    • https://fapuwokezisojo.weebly.com/uploads/1/3/1/4/131453853/kawalupinanefib-rawikatonuwese.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409606/normal_60003c8d98e0b.pdfIn PDF document text
    • https://varozifan.weebly.com/uploads/1/3/0/7/130740200/7faa1991b1c5edf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451750/normal_6030711fec20c.pdfIn PDF document text
    • http://baby-slings.ru/samsung_error_code_dc9o7iw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481852/normal_603548cd70c16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/81e44833-0c3a-4fc8-bb95-d396aba00d9b/mitufosaduzufimovepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2658755-ef06-41bc-ab2e-399ca9c718e5/fubuwik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/482a3d30-0a4f-4254-a5e9-8374b8c1104a/88202430339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afabc58e-b90d-4e9c-bd9a-cb3b8aeb6c8b/girl_with_the_dragon_tattoo_torture_scene_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6af32a5d-615c-42ff-a7b5-8c17e1aa49a4/how_to_make_money_in_stocks_william_oneil_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e6ba467-1a13-410d-a268-e22451342e54/hp_laserjet_4050_cartridge_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c6393f-931b-4c27-83b5-cd04064a5dd7/gnosticism_biblical_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/dell_inspiron_n5010_drivers_windows_7_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/rititezavavoxajom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6eb9fad-46ac-40d2-975b-f2c84a32a769/how_to_change_ink_cartridge_on_canon_mg3520.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d977f6a-3a67-4535-8166-678bba05a681/favunadizazekalukajoman.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_off00010c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C98 4780 bytes
SHA-256: ad4fb7a39de2f46cb9483eb1569f3ad014949d6a6da4ed8f8fc2abd59d1b130f
font_01_sfnt_off00011cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF4 11900 bytes
SHA-256: 81fa533ebd673daa18d29e91bdb483d35667688a2d2f0af44086aafde249ba59