Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea03df96eb394ae…

MALICIOUS

PDF

59.2 KB Created: 2020-12-11 02:00:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 114a506e389b258f091ffa6b085344e3 SHA-1: 18f9d8afa429a482177e1297f8e4984950600283 SHA-256: dea03df96eb394ae9dd5cbab4169ae40f8b03690f9af6dec172ee39f8dce03af
156 Risk Score

Malware Insights

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

This PDF file contains numerous external links, with a critical heuristic identifying it as a PDF link farm. One of the primary external URIs, 'https://trafffi.ru/strik?utm_term=relevance+of+glanzer+and+cunitz+experimental', is flagged as unknown reputation, suggesting a malicious intent to redirect users to potentially harmful content. The ML classifier and ClamAV detection further support its malicious nature, likely as a phishing or redirection tool.

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 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://trafffi.ru/strik?utm_term=relevance+of+glanzer+and+cunitz+experimental PDF link annotation
    • https://vifoxofanope.weebly.com/uploads/1/3/4/6/134670603/ruwej.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/32b760d2da65d9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/frosted_protean_crystals.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/zomiborexaxerewulovavik.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/493297056.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/gaxuvim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb85d800-956f-48cc-b0b5-340f3869eba0/bojurijeludo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55654d84-52ca-4d91-a829-e96d9046dc80/candydoll_Sharlotta_forum.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/arcana_heart_3_love_max_ps3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df9a7b1-4366-40ff-90d6-b3d4d531770c/wolfenstein_the_new_order_wont_launch.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/zelibanofotuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/99786319360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6174cb56-364f-4eef-b801-04b67c46032c/october_sky_trailer_italiano.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_off0000aa41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA41 5484 bytes
SHA-256: 4f6e2391d2fdf7f087a9086442de30fbe7b2c2cba6a550badaf91a720284c930
font_01_sfnt_off0000bcec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCEC 9808 bytes
SHA-256: 02475583625fe97c80d5318a3cbf3ec6507e212de6d3cc8f7e642323428acf73

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