Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf09b4207d95bca…

MALICIOUS

PDF

71.3 KB Created: 2020-11-17 18:51:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d6b889e28162b372c5b3f1718b60c409 SHA-1: 983e53a46f446ec32476bac72964fa97ccb17fba SHA-256: 6cf09b4207d95bca26c3222162491c0d29f05ef2d588e533726eafe8a4d99fd7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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-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://traffnew.ru/123?utm_term=the+rose+of+paracelsus+pdf+borges PDF link annotation
    • https://tefitosuwit.weebly.com/uploads/1/3/4/4/134478986/2800396.pdfIn PDF document text
    • https://givurili.weebly.com/uploads/1/3/4/6/134605008/685da.pdfIn PDF document text
    • https://taxikifa.weebly.com/uploads/1/3/4/4/134496463/7764685.pdfIn PDF document text
    • https://kutolimog.weebly.com/uploads/1/3/4/4/134435461/kogevegubedowas_veluri_nifabexet_modigajisajigob.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/wajofabej_lenigeta_lajitozalesu.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://uploads.strikinglycdn.com/files/362b2b87-b395-4601-9d90-33cc28b1da24/jigavilasijavuxafolesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aacfca48-4315-4ad5-b474-92579aa3adb0/nadaxoketodupufuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47347ac5-a03a-4b21-9719-7f50a222e14d/90713265670.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/fofevubefozavorut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195b1d22-da8d-4765-86d9-ce90ea850155/banezose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e71c4a7d-de01-4edb-bdeb-a6cf69a9259f/torrent_apps_china.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/ls_league_of_legends_rank.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46c5e60-ddf8-449f-9917-6197e2b826d4/99206156872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc349fee-361b-44e8-ae26-5e0993155b34/fumuferapowagidaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63e25597-a235-4b98-ab18-76644b55f0c6/terrarium_particle_sprinters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba02151-1b45-4420-b2eb-3f24c9d141f4/sodeloxemamavedokiwubaj.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_off0000cdd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD5 5152 bytes
SHA-256: 2a5506e9c8d5f2049ba4202337cf89d198114fa4ecc4d2995b6fabd1a881d208
font_01_sfnt_off0000df63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF63 10428 bytes
SHA-256: fdaaa4ada4bc26e1f7a04a174e33fe8b23d0046a022dfa9ceb0d2b716e28d2e6
font_02_sfnt_off00010241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10241 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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