Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f16e9720b5210c…

MALICIOUS

PDF

86.9 KB Created: 2021-01-26 19:48:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1d841b9061ebd99df236ff609e3daace SHA-1: 7d652be7809989095be3c337b97a5633750ae3cc SHA-256: 14f16e9720b5210ca31f8291ee9370cf30333901f35c82e98d1a3fa98d51697e
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URI that points to a suspicious domain, likely intended to trick the user into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=developing+management+skills+9th+edition+ebook+pdf PDF link annotation
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/sibizagepilax.pdfIn PDF document text
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/bdddd4a4880662d.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/7purnhf/prison_break_season_3_cast_sofia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480591/normal_5fde073da20fc.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/6hOidRx/46296361999.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401691/normal_5ffd54675de94.pdfIn PDF document text
    • http://exclusmxpn.com/hack_coin_vua_bong_da_2020zfdhs.pdfIn PDF document text
    • http://pannochki-art.com/mosoxolide4wffk.pdfIn PDF document text
    • http://torchland.xyz/energy_joe_mod_apk_rexdl6xenk.pdfIn PDF document text
    • https://loseseseveru.weebly.com/uploads/1/3/0/8/130813975/f13059f1e75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500895/normal_5ff8d974011e1.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/gfXhcwd/dadavaraba.pdfIn PDF document text
    • http://freud.icu/zaxiwiletal03n8y.pdfIn PDF document text
    • https://merirano.weebly.com/uploads/1/3/2/7/132710628/zeruru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379971/normal_5fffa31b01603.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465397/normal_600b420c1e5d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF410 5776 bytes
SHA-256: 208dfda900de9bb9566ece5f9ba9e0105fbe3ff4e731b19c8e95068bee912229
font_01_sfnt_off0001079e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079E 12248 bytes
SHA-256: 8c25e4e76e76a0aadf9f7e5b119cfbc5c140880326f2e7e777e0c23e5640eb94
font_02_sfnt_off00013001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13001 18088 bytes
SHA-256: 99906fb900c7f511a9bfa3dee345a0d8ecf00638c4c86fc0881eef64300129de

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