Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2eda319eb81d0ef…

MALICIOUS

PDF

79.4 KB Created: 2021-03-20 04:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8d60d2fd81dd35d79169d4a0f5030c69 SHA-1: 5140ccec52c903958df22c795b36d71317776c27 SHA-256: f2eda319eb81d0ef2cb1e09cf005e0562edfd38ff06c7e0b78c58cafd7f0d62e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/award?keyword=download+foxit+mobile+pdf+apk PDF link annotation
    • http://modernstyle.pro/28181313445s47e9.pdfIn PDF document text
    • http://static-get.top/what_is_self-mastery_philosophyvufu6.pdfIn PDF document text
    • http://bestgirl69.com/ximuxagexaruawh.pdfIn PDF document text
    • http://stavki.link/aprendiendo_de_los_mejoresvf4kc.pdfIn PDF document text
    • http://brumbum2.xyz/music_movement_and_drama_activities_for_babies1axz5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421207/normal_604da77de134b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382781/normal_5fcc52ab50ceb.pdfIn PDF document text
    • http://helpverifybadges.com/51612400446pafwp.pdfIn PDF document text
    • http://mrshadow.net/lugabenufumujuxolatibh8wy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384030/normal_6041a9970bd16.pdfIn PDF document text
    • http://citruss.space/fapeloloserifog48.pdfIn PDF document text
    • http://fishing-rods2.club/weekly_lesson_plan_template_editable_freevfuie.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/36802b8e-5acf-41d8-b065-edab36463f42/why_is_my_nespresso_coffee_machine_leaking.pdfIn PDF document text
    • https://a819be37-316e-4347-83bc-b067fb6953c8.filesusr.com/ugd/d5662a_62840105e08044dd86ef4a52e6f74ac5.pdf?index=trueIn PDF document text
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_3d1a5c50ac21478f9b83bb0a1f1f7b04.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/87f80781-01d4-4aba-bdad-51fb746d3869/klx_110_pit_bike_for_sale_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9efd4fd-c2e0-4a66-83b8-470d57ba9200/self-defeating_thinking_meaning.pdfIn PDF document text
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_fc545eccccef4a2b80d6c030f4a5a53e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7ee5a23-f4a0-4786-a7d2-744daa5c661f/tezitodesejevagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d6740cb-35bd-43fb-a9e0-4980fe0414fd/dumel.pdfIn PDF document text
    • https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_1a2e8c6b4c014e15b17c48f7592f8c8c.pdf?index=trueIn 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_off0000f882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF882 5276 bytes
SHA-256: 098618d36147a79b0a54260fce48f4898d152db0a46985760324cc473703bac1
font_01_sfnt_off00010a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A83 10612 bytes
SHA-256: 124ac7f43327efa970e3e74c9fdeb86b1662484df44f5ecc18ad444be952aa1d

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