Malicious PDF — malware analysis report

Static analysis result for SHA-256 5af74fb8bcb560cb…

MALICIOUS

PDF

78.0 KB Created: 2021-03-29 17:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5ae4e3337ae8b8506d9e08b74af4e985 SHA-1: b481bb8f06730b2d0ea85a160dde209ba3b832a0 SHA-256: 5af74fb8bcb560cbd070b6777ed0d6b38bd5378500135905bd4a5f2c014bd57f
176 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a phishing lure for a password-protected archive. The embedded URL https://golowaki.ru/123?utm_term=dhadak+movie+song+ringtone is associated with this redirector. While no scripts were explicitly extracted, the PDF structure and detection names suggest potential for embedded malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?utm_term=dhadak+movie+song+ringtone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425924/normal_600883d964576.pdfIn PDF document text
    • http://galoomer.online/xawazetagulogizotit8750.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422382/normal_5ff51af564c75.pdfIn PDF document text
    • http://sobakin.space/dd_beyond_homebrew_guidedrwgq.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/450660f7-531e-4333-9f47-12e5f5f36692/timex_dual_alarm_clock_radio_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/biblia_reina_valera_1960_en_linea_con_concordancia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b408c6-1a38-457b-ba04-c16cc831e65e/solution_manual_-_mechanics_of_materials_4th_edition_beer_johnston.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c23c15dc-7797-47dc-bfd8-463e134d6922/how_to_layer_mask_in_gimp.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/why_my_washer_will_not_drain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7946b130-f220-4b4e-a8ad-5844fe37afd9/how_to_fix_a_leaky_hot_water_shower_faucet.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/87980324537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08f5acd0-5eb6-4502-9fbd-08b2eece9dc9/personal_math_trainer_lesson_13.1_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a50cd72f-3b73-475a-bf36-7d03b0ef24f2/what_are_the_12_steps_of_a_heros_journey.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/valores_normales_de_glucemia_capilar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a7aa60-f88c-4c5b-b4c0-16cfe128fd0c/rowenta_steamforce_iron_warranty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f7ad93-d602-4a41-9bd2-27bbad1d4917/88249732649.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e38d0e3f-e6fe-487a-9f92-eb93f0c65ab4/basic_symbols_used_in_technical_drawing_ppt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d69eb8d-734e-442d-a923-0c2457096b98/how_to_program_my_spectrum_remote_control.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19e6edc6-c19a-48a1-858f-993083b809aa/how_to_float_book.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_off0000f356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF356 5328 bytes
SHA-256: f6452082457a3e7090bc6a64922d3d228bd2f5b381cdac823614e4ce3a5e31f7
font_01_sfnt_off0001055c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055C 11048 bytes
SHA-256: 8954c685b0a9874e535e397c9630d90868606d76f9184241cd71aa67e2a3450c