Malicious PDF — malware analysis report

Static analysis result for SHA-256 f81f495ede7f1f95…

MALICIOUS

PDF

68.3 KB Created: 2021-02-27 18:56:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: f31b8d279dff1142e33b5dff1f2b26b5 SHA-1: 9b253862424d580f7959e48bfa8c6a8de921701d SHA-256: f81f495ede7f1f959312c4a4d32f0bd9c106c56c0be29db7813be4b6c1d89f03
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/wix?keyword=power+word+stun+pathfinder PDF link annotation
    • http://pimavegi.22web.org/brownlie_principles_of_public_international_law.pdfIn PDF document text
    • https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/nulowabutame.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/safajokugemup.pdfIn PDF document text
    • http://nevinidonet.mywebcommunity.org/angles_in_geometric_figures_worksheets_grade_6.pdfIn PDF document text
    • https://nuvosukive.weebly.com/uploads/1/3/4/7/134718285/fosodulise_sajumovew_kuwigeve_tunepajawaf.pdfIn PDF document text
    • https://cdn.sqhk.co/fedijadika/Gigighc/ballet_couple_dancing_image.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/fjeExlv/retro_brick_cell_phone_bluetooth.pdfIn PDF document text
    • http://kogutojoveso.mywebcommunity.org/how_to_make_your_own_lithium_ion_battery_pack.pdfIn PDF document text
    • https://cdn.sqhk.co/pudinivil/jjYje7D/vobabipizalupigavur.pdfIn PDF document text
    • http://sowipilarow.mygamesonline.org/17953190450.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bikaxubu.rf.gd/tajeri.pdfIn PDF document text
    • http://batezitiguduf.rf.gd/60014344407.pdfIn PDF document text
    • http://mumakup.rf.gd/13930329604.pdfIn PDF document text
    • http://poduzamilikuki.rf.gd/26184550758.pdfIn PDF document text
    • http://rosukijabadizi.epizy.com/jakukefipesezidufiromot.pdfIn PDF document text
    • http://zimifad.epizy.com/lean_six_sigma_green_belt_certification_cost.pdfIn PDF document text
    • http://zikofizoredu.rf.gd/68331302888.pdfIn PDF document text
    • http://zuputes.atwebpages.com/navy_technical_directive_manual.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_off0000cfd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD9 5192 bytes
SHA-256: 97a9ce5f9fc9d96f4d0d99f584e51d513fd2958218a50a75751aa1b1586593eb
font_01_sfnt_off0000e192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE192 10132 bytes
SHA-256: 12939b6a7361953d832d2ae72da2e5b14d94d1db221a8671cb33a604a835b504