Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5192dcae5bf955…

MALICIOUS

PDF

79.1 KB Created: 2021-04-03 17:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0336f91259fecf9a4d45bed13dbb53dd SHA-1: 24e1b199adbc8116e54e7115e55600baa55e4b22 SHA-256: 8a5192dcae5bf955272fe0d48ebfa0d3f2ccd74c94ba70e51ee839b7b8860c2b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a malicious domain, likely to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search terms, suggesting a phishing or social engineering attack.

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://midufefew.ru/wix?keyword=word+whizzle+it+peels+answers+wide
    • https://fizinizaboz.weebly.com/uploads/1/3/5/3/135304720/6715503.pdf
    • https://bapidovomefizeb.weebly.com/uploads/1/3/4/3/134382768/dimutepogasure.pdf
    • https://cdn.sqhk.co/jolodovi/bhehffu/65553772138.pdf
    • http://mitutepoka.medianewsonline.com/29505442735.pdf
    • https://buwuwewofopalun.weebly.com/uploads/1/3/4/0/134097592/gebazapipexujelas.pdf
    • https://rumuzejisu.weebly.com/uploads/1/3/5/3/135349165/wulilap.pdf
    • https://kumajevebak.weebly.com/uploads/1/3/1/8/131856027/pipogu_bozop.pdf
    • https://bisimopax.weebly.com/uploads/1/3/0/8/130814127/6573906.pdf
    • https://gazotudigexeb.weebly.com/uploads/1/3/1/1/131164446/lidanib.pdf
    • https://medowiwufaj.weebly.com/uploads/1/3/4/4/134480571/zaluduluxevelefogo.pdf
    • https://cdn.sqhk.co/jomawutid/geZ89gc/capstone_project_ideas.pdf
    • http://ziwewixowele.sportsontheweb.net/38076518583.pdf
    • https://betedodokadez.weebly.com/uploads/1/3/4/8/134882186/gitebuladasajix.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/77a554d2-77d0-4d3f-a6e3-7f96698620df/48021276769.pdf
    • http://gujimosodaza.myartsonline.com/saluxo.pdf
    • https://uploads.strikinglycdn.com/files/f2a55b62-70a0-4a7d-a424-2fb5fc234511/fios_gateway_router_manual.pdf
    • https://uploads.strikinglycdn.com/files/02188072-014c-4770-8d47-499d40dd28e8/33197364073.pdf
    • http://noratev.myartsonline.com/descriptive_statistics_formula.pdf
    • https://uploads.strikinglycdn.com/files/166e372c-9bd9-46dd-a3dc-b5697cd2a229/72680382678.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb4f.bin
6758ab5c8b5704a4f5d84c91d18c1961aed297c05608ed3b4d410143597d8376
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4F 4988 bytes
font_01_sfnt_off0000fc55.bin
560d0eff878250e59149a179e534c964629a00fb697d35f104e18b14b470adc3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC55 10748 bytes
font_02_sfnt_off000120ea.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x120EA 4324 bytes