Malicious PDF — malware analysis report

Static analysis result for SHA-256 52752f334c55a8aa…

MALICIOUS

PDF

78.9 KB Created: 2021-03-24 03:35:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 147e1502f60d467de6298e8aac5bae6b SHA-1: ac2c0e247e4557aaf22c0e5a3006d55fc07ff674 SHA-256: 52752f334c55a8aa4a51ae01dea15c5555ad7ce17cc01ab0ac732b7adb489bc8
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'fokemale.ru', which is likely the destination for a phishing or scam attempt disguised as information on addiction recovery. No scripts were extracted, but the presence of an external URI and the nature of the ClamAV detection strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=how+to+recovery+addiction PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365606/normal_605794e92c32a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419623/normal_5fc99b0d98d4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408976/normal_6051b12d3340b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500438/normal_6013189415e8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501054/normal_6018cc1acd26f.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/Oghihii/zoxejusizapikafuto.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvibabezel/ghniRhd/goat_simulator_zombie_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385424/normal_60144fc20ee9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403824/normal_5fd103ab4cc08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_604fd55fe57f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_6011ec4e42e15.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/jpibhgJ/need_for_speed_rivals_cheats_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421461/normal_5ff9a81998455.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/9f6e32c7-d3ba-47d2-9c6e-826f18c3b753/whirlpool_dishwasher_wdf320padw1_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/941fdd80-bab2-4ce1-82fc-13a5312be5ce/how_to_jump_attack_in_dark_souls_remastered.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a7a541b-cac3-48e6-8880-63ce9cbf81f4/87504292451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae2599fe-c23f-47ff-b0bd-57fc6145614e/dojevowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a07e6cdf-7f78-4932-bdab-c096e5ab0be2/list_of_all_the_dummies_books.pdfIn PDF document text
    • http://seguwogira.rf.gd/anatomie_appareil_gnital_fminin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f310af4-fccf-4c73-a8ce-acfd1002ea29/john_deere_trs21_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d16bcffa-2ee4-47d6-b748-cca7166fb599/how_to_activate_dunkin_donuts_gift_card.pdfIn PDF document text
    • http://rugeritubaduw.epizy.com/skills_to_put_on_application_form.pdfIn PDF document text
    • http://senapofo.epizy.com/chakravyuha_formation_explained.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d397ee8-c4c7-4bd3-a007-9627e3237243/alesis_hd24_fireport.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_off0000f89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89D 4936 bytes
SHA-256: a3f762a4f86cada49d945745056adbc3d9ae0f8b2343e267b58aee4431487794
font_01_sfnt_off00010993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10993 10868 bytes
SHA-256: 5b376a48684183961cd5396b4181131321acd2571467fc59185b50ab5c72fc9a

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