Malicious PDF — malware analysis report

Static analysis result for SHA-256 52af742b416a362a…

MALICIOUS

PDF

73.3 KB Created: 2021-02-21 08:33:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 53e7eabf517328844349d5ff6b6873cc SHA-1: 66420738c6c5bfe2528e222ddba698b704f340c5 SHA-256: 52af742b416a362a9c75a01c16487fcb0fb3cc0d4297ba5b5a1eda3c912a6feb
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/123?utm_term=how+to+manifest+without+candles PDF link annotation
    • https://bogibopedazite.weebly.com/uploads/1/3/4/0/134018154/xoselop.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/hae7Tih/ikea_bed_sheets_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476427/normal_602e54248e9e2.pdfIn PDF document text
    • http://lexanizisujufum.66ghz.com/small_business_health_and_safety_policy_template.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/1gficid/92122961261.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369671/normal_5fffbb64e41b8.pdfIn PDF document text
    • https://ramokazadi.weebly.com/uploads/1/3/4/4/134470245/9649707.pdfIn PDF document text
    • http://tvoeobrazovanie.fun/17201014921gqt5f.pdfIn PDF document text
    • https://vobilazi.weebly.com/uploads/1/3/5/3/135300702/6870527.pdfIn PDF document text
    • https://sadaxolofomet.weebly.com/uploads/1/3/1/4/131453623/c47d828679dad6c.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/Zy9Ichb/fitbit_smart_watch_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417206/normal_602e0febd313a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452373/normal_5fec7113caa21.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/hbhbzid/86082729691.pdfIn PDF document text
    • http://baltika-trans.ru/vudeliremusivus3o92e.pdfIn PDF document text
    • https://zeteleginogegop.weebly.com/uploads/1/3/4/5/134526156/meralowopoxutur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454435/normal_5fc7b0f8d8c08.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://teveniwavabubak.rf.gd/fuzuzirisumase.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22D 5216 bytes
SHA-256: d011c7dd080177deedd4a741938b6d904c7eddb2cb8b0853b902e25a13130c85
font_01_sfnt_off0000f3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D9 10648 bytes
SHA-256: 3744ec44621a0ad10d428317095b3dc7a82a62d271b7fb8e26eba6461e90f3a4

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