Malicious PDF — malware analysis report

Static analysis result for SHA-256 9454f9490f34efb6…

MALICIOUS

PDF

165.3 KB Created: 2020-11-25 06:06:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a2c19c4557013310acca8876440f5680 SHA-1: bd8b7fa719bcad75755af492f6dea93a96d478bc SHA-256: 9454f9490f34efb60ba905776d893230b898efacfd54fe81c2ff31389610344e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

Heuristics 4

  • 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://traffking.ru/strik?utm_term=madoka+magica+characters+age PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491936/normal_5fb577bc1444c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f89ab1b6b7f8.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/5b8bf3948c1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393489/normal_5fbd4617ca56a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/defipedibe/23876251166.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/248a9792-78a8-4928-b469-335142eb8bc1/1374707727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deeee1b2-9246-4e23-a5cb-15cccb11ad83/act_like_a_woman_think_like_a_man_ebook_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f19d4b2-708a-4a93-8e92-19c54f7a8550/dopanad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2573f67c-7c3c-442b-baf5-657ce4fd1c03/fafuniwiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70cf5c67-b856-451a-9320-7abbaac9f9a9/love_nikki_apk_download_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/2131672533.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001583e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1583E 63984 bytes
SHA-256: f7e463a5b2fa49ac6664cbbc40bd088a0be54f47595d52cc119f3d767cfea93b
font_01_sfnt_off00021c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C87 5072 bytes
SHA-256: 63a35b2c86110930f501709ab59628b2e8f272acba6a451bbe4302f5bff1756c
font_02_sfnt_off00022dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22DCE 11748 bytes
SHA-256: 4339e74dc69dcd5a4fdd779ae08ad304f71e184a162464eb8d8c109e91a1c636
font_03_sfnt_off00025511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25511 16132 bytes
SHA-256: 60f53b17f7925ac1818ac9336ea58fd206fea48872b5377b70e6fb8114080afd
font_04_sfnt_off00026a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26A04 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
font_05_sfnt_off000277c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x277C6 6048 bytes
SHA-256: fb57d076fd26f9653458af192f821ead60c28b5a18f4b0dcdfb9a557e934c240

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