PDF malware analysis — malicious · afce630f8b97f09e

MALICIOUS

PDF

65.3 KB Created: 2020-12-19 05:59:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 69ea48d70118bad12d51c377d7d3df53 SHA-1: 1a1d391cadb47db01b695ed2590c3b224c3227e6 SHA-256: afce630f8b97f09e251696f04a8c9818ed2b1068cce441fa4a6280739fa3a193

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, with a specific ClamAV signature indicating it's a Pdf.Phishing.Trojan. The embedded URL, https://traffset.ru/strik?utm_term=micrometros+a+milimetros, is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the nature of the detection suggest it may contain embedded JavaScript or exploit code to redirect the user to the malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/strik?utm_term=micrometros+a+milimetros
- https://cdn-cms.f-static.net/uploads/4460070/normal_5fdb284cb8ffd.pdf
- https://cdn-cms.f-static.net/uploads/4410722/normal_5fb623054d90a.pdf
- https://cdn-cms.f-static.net/uploads/4385004/normal_5f9d7f0286b76.pdf
- https://cdn-cms.f-static.net/uploads/4370744/normal_5f937cb4f384d.pdf
- https://cdn-cms.f-static.net/uploads/4421474/normal_5fbf680dc5c87.pdf
- https://cdn-cms.f-static.net/uploads/4392658/normal_5f91816037824.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/wonoti/kircher_oedipus_aegyptiacus_english.pdf
- https://s3.amazonaws.com/wovitiku/23299799760.pdf
- https://s3.amazonaws.com/fazujo/profit_without_honor_6th_edition.pdf
- https://static1.squarespace.com/static/5fc13908affbf90a66ec9ac0/t/5fc4a3e1f3de5e49b5f84f69/1606722530008/97082109447.pdf
- https://uploads.strikinglycdn.com/files/dc65f2f3-0487-4394-89af-66c8f4f8509a/144067413.pdf
- https://s3.amazonaws.com/fukezavazuj/textbook_of_physiology_by_sembulingam_free_download.pdf
- https://s3.amazonaws.com/dukavunivifa/doraemon_fishing_game_free_for_pc.pdf
- https://uploads.strikinglycdn.com/files/b6eb9578-b519-4df8-9fdd-3f11a632b775/44824751896.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c39e.bin` `352f2662b529c8e1e98a331cf06d3f15d6964458d52a75aea31cfba02774efad`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC39E	4952 bytes
`font_01_sfnt_off0000d465.bin` `135b1bb36125c4ee4cdcd1e6b7a9776dac6383e2e79bbaa315bc6d8bf067d75c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD465	10592 bytes

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