Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69352a4d8056fb3…

MALICIOUS

PDF

83.1 KB Created: 2021-04-05 22:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bf8f6ba077858f548510c059a29a6327 SHA-1: 219c50c8e38eb3722e8878e9c9ca88a620fd4d96 SHA-256: e69352a4d8056fb3cd5ffa2a50f3c89507086f441cb35a06ac5184b44786a412
156 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. One of these links, https://lozipotod.ru/123?utm_term=morphe+makeup+brush+guide, is flagged as unknown reputation, suggesting a malicious intent. The ML classifier and ClamAV detection strongly indicate this PDF is malicious, likely used for phishing or to distribute further malware. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/123?utm_term=morphe+makeup+brush+guide PDF link annotation
    • http://nuvagefo.medianewsonline.com/kowixugagirezipat.pdfIn PDF document text
    • http://revodegasiger.sportsontheweb.net/31472088375.pdfIn PDF document text
    • https://penukigoguni.weebly.com/uploads/1/3/1/6/131606127/291125.pdfIn PDF document text
    • https://cdn.sqhk.co/reruzemafow/iMjjiaB/91638726676.pdfIn PDF document text
    • https://vexepediv.weebly.com/uploads/1/3/4/6/134668456/0aab15e.pdfIn PDF document text
    • https://cdn.sqhk.co/faxiwapa/igejgjf/vintage_world_map_framed_picture.pdfIn PDF document text
    • http://jajolamuseku.medianewsonline.com/capitalism_in_the_twenty_first_century.pdfIn PDF document text
    • https://rurinigumiza.weebly.com/uploads/1/3/5/3/135350695/8118206.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/w6igifv/54738392261.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ad323f3e-245e-4e3c-8b16-de91fefec063.filesusr.com/ugd/5ea691_0e03e549af7b4bc6beb59d116ec1e4b8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/pilgrimage_to_divine_mercy_shrine_in_poland.pdfIn PDF document text
    • https://5da1c7d8-01c4-4175-bbf8-c25915566394.filesusr.com/ugd/1084fb_a683c1f087064bfe9d29220dd93a6686.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/96463739-25aa-4377-af82-d9e4fd30cfc5/how_to_use_smiths_knife_sharpener_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69784cd5-ac92-4e91-a5cc-6de517c99653/us_constitutional_law_book.pdfIn PDF document text
    • https://893c8be9-d140-4a04-8a3e-66bd54b472cd.filesusr.com/ugd/efd7ea_47f0076160ac412c9825698932d27e44.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezutu/harmony_dreamtime_elite_comfort_high_back_booster_seat.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/88701336983.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/aerodynamics_for_engineering_students_6th_edition.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_off0001057b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057B 5552 bytes
SHA-256: 5dffbfe34a4af2971b0ea47ce910263a65186db340702df5c308f3d2dbcf731a
font_01_sfnt_off00011832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11832 11472 bytes
SHA-256: e8e2b6601d30e13922af6fb135262ea4965c644918ca68142cb56b44301875ce

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