Malicious PDF — malware analysis report

Static analysis result for SHA-256 6021e0c8be35ce88…

MALICIOUS

PDF

80.5 KB Created: 2021-02-27 13:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb81180fee684f0cc84775c466870e69 SHA-1: 7fa066fd3dc3a1a8cdaaf23f824353a5eea5df0a SHA-256: 6021e0c8be35ce8865f99f153633832d6f5a909df8ad0661cd5a505598e0cd02
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML_NYX_PDF_MALICIOUS and ClamAV detections confirm its malicious nature. While no scripts were explicitly extracted, the presence of numerous URLs indicates an attempt to redirect the user to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=wayne+runes+summoners+war
    • https://cdn.sqhk.co/jagugide/Gjj4jgd/91197186974.pdf
    • https://cdn.sqhk.co/kidimezamos/iehd3IY/pudadanasudobom.pdf
    • https://cdn.sqhk.co/zimajigon/sgdEJgd/superstar_life_cheats_2020.pdf
    • https://kevefizi.weebly.com/uploads/1/3/1/8/131871405/garenubalagag_romumenadigiw.pdf
    • http://samettemiz.xyz/903848769723kjjv.pdf
    • https://cdn.sqhk.co/vopokemib/nO4PCgh/reset_bluetooth_mac_terminal_mojave.pdf
    • http://myshoes.moscow/inclusive_growth_and_development_report_2018olhtq.pdf
    • http://glossywp.online/instructional_planning_and_teaching_strategies_mcqsi11t6.pdf
    • https://mibarepazakeme.weebly.com/uploads/1/3/4/6/134685426/baduf-kipipopofemigew-xajegeleb.pdf
    • https://cdn.sqhk.co/bivuwusim/mhcOWib/downhill_masters_android.pdf
    • https://pazarufawituxib.weebly.com/uploads/1/3/4/0/134000032/9724103.pdf
    • http://dimozakebaba.scienceontheweb.net/how_to_connect_philips_bluetooth_stereo_headphones.pdf
    • http://tulavesew.getenjoyment.net/tabla_de_conversion_de_pulgadas_a_milimetros.pdf
    • http://zokidinodajives.getenjoyment.net/86432091105.pdf
    • https://moxuzoketo.weebly.com/uploads/1/3/1/1/131164531/1b82f0abbb8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sazasewugekupej.onlinewebshop.net/nibozerimaju.pdf
    • http://faleferesevo.onlinewebshop.net/96886546465.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e94b.bin
d29a8866d802a614873247e1b443f3df0e906f914ef1b9b6a363425e76ef1818		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE94B 5008 bytes
font_01_sfnt_off0000fa56.bin
53f0a2afd25feabb7532861687a7d9a9025daab07dbee8cd5e9bc8b7e4b19473		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA56 10460 bytes
font_02_sfnt_off00011e61.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E61 16092 bytes

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