Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07447321b88e356…

MALICIOUS

PDF

63.4 KB Created: 2020-12-03 07:13:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: fcd6e4884eb30a586489caf7d8d4f935 SHA-1: 1b7ef4e14ad03f678d75f545719e4e40935545f2 SHA-256: d07447321b88e356772342ceb52c988f0737404f224b65fff06d50bc6028c10c
156 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it hosts a large number of external links. One of these links, https://trafficel.ru/123?utm_term=club+penguin+batman+mission+5, is flagged as unknown reputation and is likely the primary malicious destination. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/123?utm_term=club+penguin+batman+mission+5 PDF link annotation
    • https://sivagodumojuji.weebly.com/uploads/1/3/4/2/134235915/9683580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f9cb9f5d80bb.pdfIn PDF document text
    • https://juboxunogaruf.weebly.com/uploads/1/3/4/7/134700559/mogisusevuve.pdfIn PDF document text
    • https://fevonijapa.weebly.com/uploads/1/3/4/2/134234837/zeragafobeborevabov.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://static1.squarespace.com/static/5fc0ed17f7cf8c75402b0ccf/t/5fc12d37bc819f1cf4026dd3/1606495543491/25662076283.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf585f8cdb769c6a8be4e/1606284677927/tipos_de_suelo_en_mexico_por_regiones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67699101-8865-43aa-9fde-a75f4505c8b9/6133339402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d49aae6e-d1e5-4eae-a344-abbb10bf0d93/rust_steam_cd_key_free.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/first_and_third_angle_projection.pdfIn PDF document text
    • https://s3.amazonaws.com/bodepova/taking_charge_of_your_fertility_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/karvy_nps_ecs_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/homestuck_land_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa76e7b5-b0c9-4a0c-836f-53ea094aecc8/nimezitiju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca5211d0-e548-4bbf-8563-94bbb1ad5aee/shogun_sushi_menu_boise.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB149 5212 bytes
SHA-256: e2606ce5603bfceaca46b4f2c2fd5a8cce00a61313be8c04f8529d9fb273f861
font_01_sfnt_off0000c2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F1 9232 bytes
SHA-256: 1a0c239f75515723b93efa6a2beaf17e37b99a38b3df79b3e2aca1a7c2005208
font_02_sfnt_off0000e286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE286 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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