Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0717349b22e7ba…

MALICIOUS

PDF

59.4 KB Created: 2020-12-19 10:37:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a72f2e64c31157fac76b3ee2c932d399 SHA-1: ef227b4c9788c4133e055422d31442e957bbe9a2 SHA-256: ae0717349b22e7ba987100e0572b32b2cb1ca47a22318329322157aed97c792f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or SEO spam. One prominent link, 'https://trafficel.ru/aws?utm_term=glennmont+partners+annual+report', suggests a lure related to a business report. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafficel.ru/aws?utm_term=glennmont+partners+annual+report PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409610/normal_5fd051dca763f.pdfIn PDF document text
    • https://sanulatoz.weebly.com/uploads/1/3/4/1/134131282/mazusixega.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/5c744c38-b450-453c-8b61-cb41e0bd7952/second_ionization_energy_graph.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79116469-6f90-4304-aec5-d4c95f2700ef/34039212435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16f2842-d2e1-40bd-ab30-77e038e1d1dc/dorawalofowegid.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/31637746237.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/americanah_discussion_questions_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/integers_opposites_absolute_value_worksheet_1_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ae7c8b-b0f1-4943-abf1-b160a311499b/rudalezurivofopomasoxafov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42a428ba-ecd0-4947-a798-d58ce85478f2/37928579020.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_off0000aeff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFF 4996 bytes
SHA-256: 5b60c8440fb7ab0a1d39e4617b5d572cefc12e049dc48268e4b48dd9a1614217
font_01_sfnt_off0000bfe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE3 9788 bytes
SHA-256: af1be7f09fcb1a323bdf47b1eb36524b09203408e6aae27fb35440e7a0ace4c5

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