Malicious PDF — malware analysis report

Static analysis result for SHA-256 313aeb20c21a1031…

MALICIOUS

PDF

82.3 KB Created: 2021-03-17 07:51:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 768c66b9dbdca35f71697ebbccb28d3c SHA-1: 4c2790e9020a8dc3b0fb9dec3cd476423a1e4353 SHA-256: 313aeb20c21a10316ca6571ba4691a00e00b668468b0378b7e8c9e97ec43966b
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://druttle.ru/wix?keyword=batman+bike+12+inch PDF link annotation
    • https://cdn.sqhk.co/kusamika/ymtggny/39832642855.pdfIn PDF document text
    • https://cdn.sqhk.co/vomikigiw/gfgdCWK/kamed.pdfIn PDF document text
    • https://cdn.sqhk.co/moxoxitij/hdiahea/bineruzufujosako.pdfIn PDF document text
    • https://cdn.sqhk.co/jufulezamuko/Whfyoeh/45830827614.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/hghiCw2/gipepukomegujopa.pdfIn PDF document text
    • https://cdn.sqhk.co/tufiroxova/UgfigGN/rofimi.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/hjpieSa/dragon_quest_builders_switch_eb_games.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/ierBijG/64803122402.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/ddmkggj/36666935944.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/hhiiggd/usa_network_roku_app_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxifobiro/gdOjehg/puxexalu.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/jrli8pR/96598313071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420430/normal_602ff83801dbd.pdfIn PDF document text
    • https://cdn.sqhk.co/xenaporo/44hiWzI/learning_strategy_training_activities.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489846/normal_602e6157e7f15.pdfIn PDF document text
    • https://cdn.sqhk.co/butiluluvuk/aDgdkie/zopukufujez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401985/normal_5fe1eafcc42c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xiwevitox/formal_apology_letter_to_a_client.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/064a1c10-19fc-426d-8b73-f76b8ebd2776/28623820351.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d484372b-ce65-4152-bf87-64a364cf4511/asm_fm_manual_11th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bd42fe7-6d79-40d2-9885-8744e073e201/tasamupatuvibobovukenux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87200f57-08d7-4b75-a17c-af93b8fb1962/31462126085.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/21st_birthday_invitation_templates_online.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79A 4848 bytes
SHA-256: aec61eb05decd940e435ba904f94163645985bf28e1884f15b9334a94cb86aed
font_01_sfnt_off000107ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107ED 11104 bytes
SHA-256: ba4ed6060722ac472d25b2cb7b474dd6632e68accaec2448e479bf4c93eca346
font_02_sfnt_off00012ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DDB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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