Malicious PDF — malware analysis report

Static analysis result for SHA-256 2993a51919094980…

MALICIOUS

PDF

78.3 KB Created: 2020-12-18 07:53:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4e7670bfa0c521d821281f6817e3fdc1 SHA-1: dbd29e5216ba6c4cd843eafe2217c6c7c493566f SHA-256: 2993a51919094980723373e921843c1b6eda4e326d33e2c0bc33c3a19ce5ca34
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the 'PDF_SEO_LINK_FARM' heuristic, suggesting a link farm or redirection scheme. One of the primary external URIs points to 'trafffi.ru', which is suspicious. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the nature of the link farm and the phishing detection suggest malicious intent, likely to redirect users to malicious sites or download further payloads.

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://trafffi.ru/123?utm_term=pratt+identity+guidelines PDF link annotation
    • https://mumoporexebaxuz.weebly.com/uploads/1/3/4/3/134339912/caaa8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452853/normal_5fdb741a30e7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494888/normal_5fc284f789b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479718/normal_5faf2d6a0e055.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379241/normal_5faa06df82cd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379723/normal_5fc8d57c30e18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409827/normal_5f9f39b32eb33.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/4edfc2244f3b.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/fofeguj/dietary_guidelines_uk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5282a5687f52b6b9ce1a7/t/5fcb46c4551bdc47e7a60d3b/1607157444918/spiralizer_apple_peeler.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5da01bda9c57a97e01dc8/t/5fcfe2801604de68f57206e5/1607459457007/snowflake_stock_symbol_robinhood.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec41e6c9-c0d7-47d1-95cb-1a15fb5eb4b6/wish_you_were_here_delta_goodrem_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/juco_basketball_player_rankings_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/17949118205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6183ef47-64a8-44b5-9485-9dd3dd2c1ee4/koxubomivigurabof.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/70667922986.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_off0000f65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65E 5096 bytes
SHA-256: 733612c76939bff21fdd40e3ed77584425c89993950ca6a67c9ce1d75f72667d
font_01_sfnt_off000107c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C4 10708 bytes
SHA-256: aebcb57a4b23e125313b6a93927a532c7af2d241d7b6626025382ce0fddeea37

Open this report in the interactive analyzer, or submit your own file for analysis.