Malicious PDF — malware analysis report

Static analysis result for SHA-256 547e3e42ed0b54b4…

MALICIOUS

PDF

110.6 KB Created: 2021-01-01 08:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d48590d844bf23491157b6c0448a9ce4 SHA-1: 7d8996990ef6206bd8d6d0190244ddee7c14d0f8 SHA-256: 547e3e42ed0b54b493c77ff4b6d4d7ab99ded3bed0be6ea2e8449a7ffc61579d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, trafftec.ru. ClamAV detection and ML classification strongly indicate maliciousness, specifically a phishing or trojan payload. The presence of multiple embedded URLs suggests a phishing attempt to redirect the user to potentially malicious content or download further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=balloon+tower+defense
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/defanopowokev_kogopaxikawu.pdf
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5f961f5eb8450.pdf
    • https://cdn-cms.f-static.net/uploads/4369629/normal_5f9fac5e3b9e8.pdf
    • https://cdn.sqhk.co/poladejug/ajbzNii/novisezikegalalubo.pdf
    • https://cdn.sqhk.co/fuluzezufe/ghcgiXw/gravity_trampoline_park_glasgow.pdf
    • https://cdn.sqhk.co/jumifokujuje/eMxvicc/the_oregon_trail_american_settler_java_320x240.pdf
    • https://cdn-cms.f-static.net/uploads/4417040/normal_5fd86bcac3cdf.pdf
    • https://suxokigivulumu.weebly.com/uploads/1/3/4/4/134479742/0e6083d.pdf
    • https://static.s123-cdn-static.com/uploads/4390661/normal_5fee7f09d2185.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0a9f27a0-5a67-4897-bb82-0f6dbb36d588/wulamukamotofomofezo.pdf
    • https://uploads.strikinglycdn.com/files/521ee262-7ffd-4d82-bba1-94f78163765e/sejozafidareravodu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015c96.bin
2bd27e790c65aabb67ca2e0d4e6420f9cb3e5ae04231763f54d6c7e25f183ded		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C96 5040 bytes
font_01_sfnt_off00016de0.bin
cb6ac7ffafbf8792f407cd52378e9dd6057e526cc2dbf4738254876cdba7ebe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16DE0 12420 bytes
font_02_sfnt_off00019851.bin
f316be14b6fc2a26b33f765ac643442b1ca2252d057d18992df21a386fb999b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19851 16144 bytes

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