Malicious PDF — malware analysis report

Static analysis result for SHA-256 01bcb5f69da9518e…

MALICIOUS

PDF

77.2 KB Created: 2021-04-02 20:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 49fe156c7fb14fe74dfaff87a80de05e SHA-1: 9726241dcb1b07548962e701728380ad0f10cde7 SHA-256: 01bcb5f69da9518e7dac518988d0fd1b0f28ff74b0febffd42c99f7c9829e8df
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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/strik?utm_term=a+shade+of+vampire+full+movie PDF link annotation
    • https://gekimirit.weebly.com/uploads/1/3/4/7/134700474/9645fe341b8.pdfIn PDF document text
    • https://cdn.sqhk.co/xugiwatokax/gfwZhiv/80117007750.pdfIn PDF document text
    • https://gajaxaja.weebly.com/uploads/1/3/2/7/132712369/medarowigutosinudix.pdfIn PDF document text
    • https://cdn.sqhk.co/givefugonuw/hghghhc/guide_to_contouring_your_face.pdfIn PDF document text
    • https://tufojeju.weebly.com/uploads/1/3/0/7/130740258/muropemefurafek-vapijutipovepib-lifasuwuxi-vakas.pdfIn PDF document text
    • https://beveroseve.weebly.com/uploads/1/3/5/3/135316004/eb76a569.pdfIn PDF document text
    • https://cdn.sqhk.co/rizuwevize/MWFihdC/pba_pro_bowling_game_xbox_one.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/minegikukovel/out_of_office_annual_leave_message_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d2a71d7-6a1d-460f-94a0-07687bb561e0/ice_fishing_tips_for_rainbow_trout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/640da2d6-fd5b-4aca-be94-eff0596866d9/cpm_course_3_chapter_6_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf5c9241-ae91-41fd-8f1d-bdb3a5a5ba76/2016169636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f126d7-7e7e-44d7-8d01-3f42cd2fca16/what_does_a_cultural_movement_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1559cfe-1136-4068-a565-8edfaca28162/mekuvarejulebotavelakob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a976315-7ba3-4ef4-a028-747b04c658b1/49907672532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46729579-52b1-4700-aa17-480265754ddf/canon_powershot_a560_low_battery_problem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c48a679-bc79-4f66-8ab6-f90de204f3b2/deruxutom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf34918e-ecad-443e-b8d6-4c57f13940db/vocabulary_workshop_level_c_answers_unit_12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f6cea6-0ee3-4554-a80d-aef37f36cce1/26489237567.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/football_mania_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a368bb3-f731-4e1d-a9e5-e1691e7dc953/what_is_alex_rider_stormbreaker_about.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2d6fbb0-520e-4780-a526-2b4914ad2bce/hyper_bicycles_hyper_24_mens_havoc_mountain_bike.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9840c1c3-76dc-46e0-bb58-80116ecfd639/ocarina_of_time_great_fairy_laugh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/469bedab-3058-4f56-9a9c-866bd69d2401/tesazalexu.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_off0000eefa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFA 5332 bytes
SHA-256: 864f8f7676a3c8391fe80c8f698de5efedb0d3c69d7a5b9c02da39fc1906e24b
font_01_sfnt_off000100f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F8 10912 bytes
SHA-256: 579a58e8e0d6b413cc281f55bf12f754bc0bfdf93eefc80fb539a83e92ba3d02

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