Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c3f65e8a4a852d…

MALICIOUS

PDF

67.6 KB Created: 2020-11-10 01:17:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f79a58532164ab3da8d79d54cf3d872b SHA-1: 1457ddbf03432a55010df930533116e5362bbe5b SHA-256: 58c3f65e8a4a852dc9af0b31eeb605c4bbdb3a30702f329dd090dbbf6d75f482
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and it contains an embedded URL pointing to a suspicious domain. The presence of a 'download button' heuristic suggests a lure to trick the user into interacting with the malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/123?keyword=body+rider+elliptical+trainer+manual
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5f93b2fe05997.pdf
    • https://cdn-cms.f-static.net/uploads/4383300/normal_5f91959bb4025.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c725984b-a74f-4b3a-85a2-fa2436c0a25c/adjunto_adnominal_e_adverbial_atividades.pdf
    • https://s3.amazonaws.com/fidefofudi/spring_break_2020_cps_chicago.pdf
    • https://uploads.strikinglycdn.com/files/3d30fae4-098a-405e-a904-fee3a4fdb39c/zujefotibiwarejugajamunen.pdf
    • https://uploads.strikinglycdn.com/files/a55fdd45-6bde-4ab3-9c30-c4d1b16a9228/palidomodus.pdf
    • https://s3.amazonaws.com/dujepav/hot_wheels_highway_35_world_race_set.pdf
    • https://s3.amazonaws.com/liwelu/pop_slots_freebies.pdf
    • https://s3.amazonaws.com/potamotaz/zutugorawi.pdf
    • https://s3.amazonaws.com/gagagakigibapo/leonardtown_high_school_graduation_2020.pdf
    • https://uploads.strikinglycdn.com/files/beb82bf5-07ac-4945-a487-f4aa3aaf7bb8/80757582325.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.

FilenameKindSourceSize
font_00_sfnt_off0000cd3b.bin
c1c48c259928c30c9352cc45c92ec0691db346a6af09a9b158313204ce8a6b92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3B 5192 bytes
font_01_sfnt_off0000ded7.bin
21e7bc2781bb0052d546f7f2e7c8107f526f9a1ec32e5d91741180d2685eb92a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDED7 10128 bytes

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