Malicious PDF — malware analysis report

Static analysis result for SHA-256 1300f2f7390bcdec…

MALICIOUS

PDF

71.6 KB Created: 2021-03-30 17:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1411f80ee32f8ff6fde46389294ef73d SHA-1: eaf1234c6bc3dd0c20d67404859ca52896b340f8 SHA-256: 1300f2f7390bcdecd77de9f3f8cae985aa91e8b1e4208b401788b3e89d844cda
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, particularly to 'fokemale.ru', suggests a phishing or link-farming scheme. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to exploit users through deceptive content and external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/123?utm_term=libro+escritores+de+la+libertad+pdf+gratis PDF link annotation
    • http://naturmilans.fun/15433629910w33ou.pdfIn PDF document text
    • http://olymp-trade.top/aace_diabetes_guidelines_powerpointliv4d.pdfIn PDF document text
    • http://milanomoda.site/whirlpool_top_load_washer_manualxuik5.pdfIn PDF document text
    • http://discount50.pro/poe_tasuni_or_irashaxssgg.pdfIn PDF document text
    • http://jisutuxoxaza.medianewsonline.com/what_is_the_best_jetted_tub_cleaner.pdfIn PDF document text
    • http://lp-consalt.ru/how_do_i_change_the_time_on_my_panasonic_cordless_phonewuaix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/xudobesalo.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/96568139269.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/xejabogugunufevunorig.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/artisteer_3_free.pdfIn PDF document text
    • https://f64a1a0a-debf-4843-a838-a34c0cae0f4a.filesusr.com/ugd/89602e_78c4f73d0b6341a4805b5b1cf36612a6.pdf?index=trueIn PDF document text
    • http://pidusagi.atwebpages.com/25960760033.pdfIn PDF document text
    • http://pozijawikubinun.myartsonline.com/aufgabenpool_mathematik_ahs.pdfIn PDF document text
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_8724e23a2bbf4299af6854c8ad3931ec.pdf?index=trueIn PDF document text
    • http://rawigukegopafot.onlinewebshop.net/rotilawozare.pdfIn PDF document text
    • https://a95edb9d-21e5-46e4-bb1b-b1fdf66a5dae.filesusr.com/ugd/09e34a_6c4a740f4c99459f8f4e826719525179.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/337191b8-f2c4-4bfa-a1c3-b4c88fbdc0ed/black_boy_hairstyles_long_hair.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/fiat_barchetta_performance_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/wajuzepulorijudimakekene.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/sinkholes_can_form_when.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/anticoagulants_classification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/608c853f-88fc-4200-ae66-bf2be7cc47d4/86576988282.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_off0000d9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A4 5404 bytes
SHA-256: 5eac56321573d05dadc504d369e6b03468e221ec94e861f250355b719d464686
font_01_sfnt_off0000ec14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC14 11212 bytes
SHA-256: 7691e666e8473375bf784c58c81673d587a40c2fcc2c0077eae1d3c6a820c637

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