Malicious PDF — malware analysis report

Static analysis result for SHA-256 3417cd784617ac88…

MALICIOUS

PDF

82.5 KB Created: 2021-03-24 20:35:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b9906897ee2591cd9cf472ef39aba2e4 SHA-1: ffa2c7868855e85c1467c6e465668d3383f9bf56 SHA-256: 3417cd784617ac887e8da98a8d0d8d6a46739c34fa020f5023093bf07ba29298
156 Risk Score

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 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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/123?utm_term=beaver+builder+pdf PDF link annotation
    • https://cdn.sqhk.co/fowujizul/jU4ieja/zogovarurivuxoj.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/hcnhcjj/kiwimagabaxapetijoz.pdfIn PDF document text
    • https://cdn.sqhk.co/xunalafugapa/ihpNHig/angel_has_fallen_movie_free_mp4.pdfIn PDF document text
    • https://cdn.sqhk.co/jesarijufe/eibOVgY/free_vegas_slot_machines_no_download.pdfIn PDF document text
    • http://tokesuditetu.getenjoyment.net/is_math_anxiety_real.pdfIn PDF document text
    • https://cdn.sqhk.co/lijedubejop/eOACWc3/steam_table_for_sale_cheap.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/baxekojojexusol/vw_golf_mk4_cant_connect_to_obd2.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/atoms_elements_and_molecules.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_2d2acb4ea7074ed69e00372c6f27da2a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kakef/nowoxudususotexo.pdfIn PDF document text
    • https://2b81f3f0-3f46-42ff-87a7-5865dd96cd3c.filesusr.com/ugd/fb41f9_454dccb50edf4616bf315f03fa054558.pdf?index=trueIn PDF document text
    • https://441dbedc-201a-49d7-bb2a-292980023e2b.filesusr.com/ugd/473728_b99b47acdbae46829d6909ef83d1ebaa.pdf?index=trueIn PDF document text
    • http://seroritubofa.atwebpages.com/pegirogutokawuxurutak.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/section_2_costs_of_production_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/kunov.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/piditobotezomen.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 4

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_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 4692 bytes
SHA-256: c8a481481a5134dd4d64b02fc59eec6a2f6af994a2261b6b8b9ab93996df987d
font_01_sfnt_off0000fad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD0 22756 bytes
SHA-256: 0ad0e088c7ff0bd9ffd85436ec95114f83f60c679ca69b76b623d4761c5f5148
font_02_sfnt_off00012db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DB5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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