Malicious PDF — malware analysis report

Static analysis result for SHA-256 483a892f108b8b17…

MALICIOUS

PDF

78.0 KB Created: 2021-05-31 00:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44fff18bec9f9cb4d46073a96ea729b6 SHA-1: 2a4f1e605ad99559ab9d27bb7c947fc69440a7a5 SHA-256: 483a892f108b8b1710b3301cfc1234d43d704eebc8f8a21cae014c4f06ebcc14
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URL 'https://lozipotod.ru/strik?utm_term=what+is+the+behavioral+theory+of+management' is likely the primary destination for the malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/strik?utm_term=what+is+the+behavioral+theory+of+management
    • https://wibosopepizasu.weebly.com/uploads/1/3/4/3/134332643/f26516801a2.pdf
    • https://static.s123-cdn-static.com/uploads/4495395/normal_5fc834796ffa1.pdf
    • https://vepezoroz.weebly.com/uploads/1/3/4/6/134605761/butugeberatule-rudexoxenevaba-zukevexax-tudojo.pdf
    • https://cdn-cms.f-static.net/uploads/4407795/normal_602456c7ac2b9.pdf
    • https://xizotikozuza.weebly.com/uploads/1/3/4/5/134587863/74b280b54091c.pdf
    • https://befadileniralan.weebly.com/uploads/1/3/6/0/136082268/8497038.pdf
    • https://cdn-cms.f-static.net/uploads/4451755/normal_6019982a340d9.pdf
    • https://manonerotorupu.weebly.com/uploads/1/3/4/6/134683358/7600055.pdf
    • https://bijimeko.weebly.com/uploads/1/3/4/3/134327756/5aa6b28c2a06.pdf
    • https://cdn-cms.f-static.net/uploads/4411937/normal_5fdc292c12cec.pdf
    • https://xizotikozuza.weebly.com/uploads/1/3/4/5/134587863/958979.pdf
    • https://gifogesedex.weebly.com/uploads/1/3/4/6/134625351/1443377.pdf
    • https://nodeseverew.weebly.com/uploads/1/3/5/3/135323512/jiboluwubanowez.pdf
    • https://cdn-cms.f-static.net/uploads/4484365/normal_603fd04a7a9cc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e7fb1be1-abf7-4b55-b0ed-a7e2ca806779/72777190238.pdf
    • https://uploads.strikinglycdn.com/files/5e3e9d09-76b5-4703-a073-4604d1a96084/vavemipikonedix.pdf
    • https://uploads.strikinglycdn.com/files/0c79eb7c-0930-4edd-9666-b0535d72d1d9/nordictrack_x9i_treadmill_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/08858b10-3764-4636-ab93-7bd3ba65178c/13636154280.pdf
    • https://uploads.strikinglycdn.com/files/3269e62c-b165-4398-937b-088cb1d96a07/mulotivi.pdf
    • https://uploads.strikinglycdn.com/files/c8325529-a69e-4611-a0c8-0ff9a5be637c/zojirushi_bb_cec20_vs_bb-cec20.pdf
    • https://uploads.strikinglycdn.com/files/1e9225bd-0aca-4eb4-a4be-6b884be893cf/operations_research_canada_university.pdf
    • https://uploads.strikinglycdn.com/files/a5fabfb7-0cf4-4302-9981-c4f1934237a4/21757495262.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5b5.bin
63bd9e3b5c6f418d842be902b6cd12572fc7d1ec679540736e1eb83aad7bddd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B5 5496 bytes
font_01_sfnt_off00010854.bin
2a0f1e48e9f16429405ba0706be0458928467c3cae14de64fac20ffa03d845e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10854 10048 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.