Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7cf283084770bf4…

MALICIOUS

PDF

77.9 KB Created: 2020-11-21 03:31:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: da2c6e7ad2e26711ae8e2ecf082264fc SHA-1: 1c95520bf00fbcde28d1c9f6423eb363ac474175 SHA-256: b7cf283084770bf46da1c9899b13bf03981278c7f7bd0b1c86c558b4c28af5d7
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, disguised as a download for 'Marvel vs capcom official complete works pdf download'. This URL is likely intended to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafficel.ru/123?utm_term=marvel+vs+capcom+official+complete+works+pdf+download PDF link annotation
    • https://xizirogubo.weebly.com/uploads/1/3/0/7/130776043/manales.pdfIn PDF document text
    • https://mudigaxufiwibu.weebly.com/uploads/1/3/4/6/134639529/kikaxuju.pdfIn PDF document text
    • https://jijoromosuw.weebly.com/uploads/1/3/4/7/134714512/wejide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389830/normal_5f94cfb90e498.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/kupovapifin-duduxufir-sadedowusi.pdfIn PDF document text
    • https://vumerumub.weebly.com/uploads/1/3/4/6/134634189/numesezukate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f889425df598.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/374b476e-793a-4d9e-a3fd-ec01418c074c/7425531327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dda0bd06-e7b5-4bf8-b4f5-40666e748f48/adventures_in_middle-_earth_player_s_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5ce3bd6-5be1-4968-8054-0406d467610c/62974856768.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/65013770207.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/simple_weapons_5e_dnd.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_off0000d9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F1 5676 bytes
SHA-256: 806b9536217043cd337db2ca4d05982c694084a6db390b488301ed8e58b31c95
font_01_sfnt_off0000ed8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8E 5524 bytes
SHA-256: d3919305d625a262dc63fb3028daf3b01c2107ade2764721e3fd929d5cad74bc
font_02_sfnt_off00010067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10067 11768 bytes
SHA-256: 5f9e3ee8ddafeb09f47c78a2e6f72025723e4666b9b37c397055493a390cb2ca

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