Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e2b010269443c5…

MALICIOUS

PDF

75.0 KB Created: 2021-03-09 18:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76f534ba9ac97d2a84551f8fcdbe2845 SHA-1: e49ff95eea795faed73f41b129a39992240f07da SHA-256: 06e2b010269443c54c15107337fe95eb1adfdffe89d6bdf5de0ac1c245eab65a
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to PDF files hosted on link farms, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and extensive link farm are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/123?utm_term=multimedia+authoring+tools+questions+and+answers
    • https://cdn.sqhk.co/xegunorasu/gNBieVR/10102960544.pdf
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/4398428.pdf
    • https://jevulifed.weebly.com/uploads/1/3/4/4/134457796/2645333.pdf
    • https://cdn.sqhk.co/kupemopo/hfXjagi/zong_ramzan_free_internet_offer_2020.pdf
    • https://vufuredupe.weebly.com/uploads/1/3/0/7/130776381/sanosazerekiz_giwepifokiwixir_podusapisenenu_kevuzifuzi.pdf
    • https://cdn.sqhk.co/xamubana/hiifiaX/gowotef.pdf
    • https://rezibaxuxemabu.weebly.com/uploads/1/3/1/4/131453555/404023.pdf
    • https://nabokopawupanav.weebly.com/uploads/1/3/0/7/130739772/zunoripimoke.pdf
    • https://pimazapodozem.weebly.com/uploads/1/3/2/8/132814260/vowapemipibiminadoso.pdf
    • https://rudazijix.weebly.com/uploads/1/3/1/4/131453676/ce332.pdf
    • https://winofugunolef.weebly.com/uploads/1/3/4/8/134846497/9474029.pdf
    • https://vonuvevija.weebly.com/uploads/1/3/1/4/131407152/db57a2b8.pdf
    • https://cdn-cms.f-static.net/uploads/4414164/normal_602cfe3fd01a0.pdf
    • https://cdn-cms.f-static.net/uploads/4489724/normal_5fd6db7eafc32.pdf
    • https://xamurifepugep.weebly.com/uploads/1/3/4/4/134484548/menife.pdf
    • https://cdn-cms.f-static.net/uploads/4495265/normal_5fd7a60ac815a.pdf
    • https://lolizafopig.weebly.com/uploads/1/3/1/4/131453679/8680396.pdf
    • https://cdn.sqhk.co/vejuwipem/ngiNjgb/kurulelisupida.pdf
    • https://tariroviwobin.weebly.com/uploads/1/3/4/7/134715354/8732650.pdf
    • https://lawuzifelive.weebly.com/uploads/1/3/4/0/134041442/1255039.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000e7a1.bin
b74693cdf5215904271bcbe002315ce0b0e68df93e9055805743ef84b1a8bc24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A1 5464 bytes
font_01_sfnt_off0000fa15.bin
f139dc7991ae974710368743baa0a12dd89b4c20b0ef51668987b1ca2e8eec24		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA15 10700 bytes

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