Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f60098ec2473016…

MALICIOUS

PDF

74.8 KB Created: 2021-06-09 05:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6441bbd6a608ca585845e9b5e9c88664 SHA-1: e02ec54714826c6690b5a30cac82379c8b87d88e SHA-256: 0f60098ec2473016d6f644dbf0efd7236192779aaa18ba0c3fc346887328125b
156 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to external sites, masquerading as a download for Minecraft. The heuristic PDF_SEO_LINK_FARM and ClamAV detection indicate a malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the presence of numerous external links suggests a potential for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • 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://infrive.ru/pbw?utm_term=download+minecraft+trial+free
    • https://foxegakadop.weebly.com/uploads/1/3/4/3/134337736/524c8eebd78.pdf
    • https://juvikawupuw.weebly.com/uploads/1/3/1/4/131409017/7463178.pdf
    • https://watinamubil.weebly.com/uploads/1/3/0/8/130813586/d9cce760.pdf
    • https://cdn-cms.f-static.net/uploads/4406787/normal_60b9d8ca27d19.pdf
    • https://femomupine.weebly.com/uploads/1/3/4/4/134458898/1236b099.pdf
    • https://mosatidopo.weebly.com/uploads/1/3/4/7/134731439/ef29efac14.pdf
    • https://cdn-cms.f-static.net/uploads/4501201/normal_606997a756a7b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/182f1ada-0f17-484e-9492-48cb14d2204d/51360159291.pdf
    • http://giresizuloki.pbworks.com/f/bituzod.pdf
    • https://uploads.strikinglycdn.com/files/09ceea13-446c-4aed-9aec-6293b2ee7727/lifetime_48_basketball_hoop_walmart.pdf
    • https://uploads.strikinglycdn.com/files/a3ea8514-d68c-45df-b22a-58f605b7b91c/12602909563.pdf
    • https://uploads.strikinglycdn.com/files/250a4a09-70f6-4421-a394-088441b84f50/silixewojafejoxiz.pdf
    • https://uploads.strikinglycdn.com/files/82af50a5-fc31-4895-b048-4b7e774adb6d/new_jersey_residential_lease_agreement_free.pdf
    • https://uploads.strikinglycdn.com/files/7700e23f-b46e-4f75-8de4-6f006049415b/sentry_safe_key_replacement_3f2.pdf
    • https://uploads.strikinglycdn.com/files/576f76a3-ff9d-43ad-b9be-d7cc4ae8e8f9/yamaha_receiver_shuts_off_immediately.pdf
    • https://uploads.strikinglycdn.com/files/5bc896a6-f75a-42a5-bcf9-a776d2532814/debussy_arabesque_2_sheet_music.pdf
    • http://zixereves.pbworks.com/f/9775002282.pdf
    • https://uploads.strikinglycdn.com/files/88ee67b6-3cb6-4178-94f4-e665c8ff53c0/28668952893.pdf
    • https://uploads.strikinglycdn.com/files/09dd720b-b121-4807-8a35-81af722ca3d5/how_to_trade_stocks_for_a_living.pdf
    • https://uploads.strikinglycdn.com/files/35e229b5-db7d-4637-a46a-89c14e4d33df/american_dad_scripts.pdf
    • http://fixulirulafa.pbworks.com/w/file/fetch/144495753/89305736060.pdf
    • http://gepefupugalu.pbworks.com/f/fivilawukinab.pdf
    • https://uploads.strikinglycdn.com/files/2d8e296f-f6c9-42b5-9047-26ef9b24a4a9/cual_es_el_salario_minimo_en_mexico_por_dia.pdf
    • http://wexagiz.pbworks.com/w/file/fetch/144786831/71583097332.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea99.bin
283cb5531cfc06f7f239829e94de7bba01438344bc36431b8dc3a4d6d537a0ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA99 5080 bytes
font_01_sfnt_off0000fbe8.bin
ef9e2002239a952e4deff2e6f28290abb77ad58858c8126e671333b4296c05ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE8 9924 bytes

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