Malicious PDF — malware analysis report

Static analysis result for SHA-256 0218861a86a4e6dd…

MALICIOUS

PDF

68.0 KB Created: 2021-03-30 10:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 37d0bf748735914233b67eec49017df3 SHA-1: e270493c8e12350ac379e4d6ffe7414f5dfd9ab5 SHA-256: 0218861a86a4e6dd5acef04acdaeb05f51d65a17faeabd832db86a2004ca6761
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs, with one prominent URL pointing to 'fokemale.ru', suggesting a phishing or malware distribution lure disguised as a 'pdf to word converter'. The presence of many links on disposable hosting further supports a malicious campaign.

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://fokemale.ru/award?keyword=pdf+to+word+free+download+converter PDF link annotation
    • https://cdn.sqhk.co/goberirud/ojfjhh7/saledexutifol.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/ljbiab2/fumikosefijakuse.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/qDfhhgi/monster_truck_vs_zombies.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/gemunikozo.pdfIn PDF document text
    • https://cdn.sqhk.co/miwiwefe/BijihaK/3696365191.pdfIn PDF document text
    • https://cdn.sqhk.co/lokovipazal/nsjahdc/paintings_for_sale_singulart.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383451/normal_600597f5471c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_60246d3de8ae0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosabukevosubar.myartsonline.com/88923392518.pdfIn PDF document text
    • http://poborunedajemo.onlinewebshop.net/libro_ortopedia_e_traumatologia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f9a899-a603-46ee-8b9d-abccfa351428/annabel_lee_analysis_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/695b3540-2063-4fc6-9e2d-f44593a749ec/ue_megaboom_3_specs_watts.pdfIn PDF document text
    • http://gidubabe.myartsonline.com/mifodolikewazogubozugabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f925cda7-9692-4778-a9ea-31a78b430528/la_mascara_de_la_muerte_roja_resumen_en_ingles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/456bfd38-ec11-42b3-91d4-71e2f5bb939c/howls_moving_castle_book_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4975c155-2c46-437c-b53b-ebf7188a30d6/what_is_concentration_in_ap_human_geography.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/wafewowapoluwilonamuvola.pdfIn PDF document text
    • http://xirofapinowud.atwebpages.com/sazasexofojolaf.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/a4_sheet_dimensions_inches.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/72269277137.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c2311d-6362-4482-b1aa-079343ac1bf0/how_to_buy_ship_insurance_star_citizen.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_off0000cdb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB8 4992 bytes
SHA-256: 3d6e674584295e9570d8466a236a5cfe88589bfc3411616cb40966da4fb63d34
font_01_sfnt_off0000dedd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDD 10472 bytes
SHA-256: b8a569098badc607cacf3ded992e0ca44d33116bf1eaeed3b5fac515262161ea

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