Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ac5d1add03465e…

MALICIOUS

PDF

81.8 KB Created: 2020-11-26 05:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e24adc10b65faee51e20b4e1e3b53551 SHA-1: b9726204b21656bb640e8bb5a89960421f4e5a4a SHA-256: 95ac5d1add03465eb5d50ab6e8ad3d76ed86b4be7d18c1c5e991c87961398677
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. An external URI pointing to 'trafftec.ru' was extracted, suggesting the document's purpose is to redirect users to a potentially malicious site. The document body contains garbled text, but the presence of the URL and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/strik?utm_term=eutectic+reaction+equation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384825/normal_5f8c27ea88a8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5fbe7f0ca9655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8705cee3b9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377706/normal_5f8ce2e4d3e68.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/66d1840c-79d1-40a3-a87b-c9dec76483d4/how_to_play_the_guitar_in_rust.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/17049442064.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/25542427195.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/28672004602.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/55823503960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf3ba5d7-9026-4df7-a3f7-aa0d6ae715a8/legipikasewilenopezot.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/sozewinijevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4da3265-f095-408f-9b41-ee5ae1883dbd/pepewuxekeluxenusude.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B0 4668 bytes
SHA-256: 60b73d8d90fdc0afa68adbc5c3056f4c99c35f0a50847b18eeb5b6c03f95922d
font_01_sfnt_off0000f1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A6 15056 bytes
SHA-256: 53b04e4681b6a1f0ebd58c7e1672b2bc8146ffe9460f88efc4b1044dd247de4d
font_02_sfnt_off00012418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12418 16400 bytes
SHA-256: 3845c9f22234b84fcf58a1cb138bc01fede6ec32c04fe3f99e3f479174d9f868

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