Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2dc845851bddd0f…

MALICIOUS

PDF

67.4 KB Created: 2021-03-14 05:41:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 182617221fbfa0479421c1fbbbcf6066 SHA-1: 96af04b16da4b0d9d6d6cd40afa6125b6dd10ee8 SHA-256: c2dc845851bddd0fe4413f1cad9b7c5a2ef39f3a2c16b9989d03121e08d9db47
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. ClamAV and ML classifiers also flagged this file as malicious, supporting the phishing and trojan classification. The presence of an external URI suggests an attempt to redirect the user to a malicious site or download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wix?keyword=economics+principles+in+action+2003+pdf
    • https://sikalejewop.weebly.com/uploads/1/3/5/3/135341852/5279bfc93b.pdf
    • http://tamawasobo.sportsontheweb.net/wofajotegafejov.pdf
    • http://petrol-v-pol-price.site/o5xo1.pdf
    • http://predouche.xyz/blank_face_sheets_for_makeupzd34a.pdf
    • http://giveaway2020.info/fawumorakilubobiboi0ftr.pdf
    • http://sixawuragime.iblogger.org/garnier_face_mask_sheet_for_oily_skin.pdf
    • http://site-shop.xyz/grade_3_maths_test_worksheets1stjp.pdf
    • http://lofajemami.sportsontheweb.net/32808296076.pdf
    • http://tlgfree.xyz/38085226749cgohg.pdf
    • http://tihefers.online/how_do_you_reset_a_wine_fridgeafe6z.pdf
    • https://matexofetuboso.weebly.com/uploads/1/3/1/4/131453592/6972466.pdf
    • http://appeal-ig.com/910477705905l9zb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_d8f2c19c769a45e5a8d04a48d0dce3ba.pdf?index=true
    • https://5a995288-ce6f-4ae3-a3e6-14272d8003db.filesusr.com/ugd/7be1cd_ed9fe5f96d8448f6835014c24029ad5d.pdf?index=true
    • http://nuwuzokapa.rf.gd/5919395429.pdf
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_d3ba1bb2c39940efaff4cb78034916b2.pdf?index=true
    • http://nepogewapiw.epizy.com/34036541175.pdf
    • http://wamowif.rf.gd/facebook_messages_to_pc.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_off0000c96c.bin
8f7cfe9431e5fbad9b48de7ac1ab735bf0bc7704d4290d8703794df0076587cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC96C 5696 bytes
font_01_sfnt_off0000dcc0.bin
01485163354c5ec4cb6ca95721548181067761e1eb3e5a2a93014fe0a86f9677		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC0 10552 bytes

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