Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c92cdaef237379…

MALICIOUS

PDF

71.5 KB Created: 2020-12-24 06:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: cf2560f61528855a58c8d6922fc2aeb7 SHA-1: f5984c3170f6ab5ff4bc925565557dff8cdb859e SHA-256: 01c92cdaef23737938709cc25e5939d7f8bd7e9363f4c9d7b8156093d02638ef
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm, with one prominent URL pointing to a suspicious domain. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself is indicative of malicious activity.

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 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://trafffe.ru/aws?utm_term=injury+report+nba+tonight PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f97e3b3546c9.pdfIn PDF document text
    • https://zufugorutamivas.weebly.com/uploads/1/3/4/4/134401118/menefevasa.pdfIn PDF document text
    • https://nudiwosesi.weebly.com/uploads/1/3/4/3/134317077/gakezuwu-xipavogu-tosuxumenovak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453900/normal_5fad6603cc64e.pdfIn PDF document text
    • https://cdn.sqhk.co/panosiritu/Iidz49e/online_calculator_math.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/2eb0db39-8897-4b1e-8c50-257d0518a2aa/bodylastics_workout_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/77525130173.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/53459608943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73d9bf8f-c7df-429a-9a21-b86f63e25881/coby_kyros_tablet_charger.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/86623032237.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/1000_canciones_acordes_guitarra.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/wapivirotuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/cambridge_english_empower_a2_workbook.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_off0000dbf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF8 5128 bytes
SHA-256: b00fb82c12a301c4415f68e041b042d2792f405a99a0bc89142bbe501b2acd05
font_01_sfnt_off0000ed70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED70 10652 bytes
SHA-256: 1fb62143c2ebc29cac3d14fe30af29c476b2392b7aa92ea0481c751210b78481

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