PDF malware analysis — malicious · 7cd0a5bcc84eb4ce

MALICIOUS

PDF

76.1 KB Created: 2020-11-18 11:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 50c1b5401f91b94ee8bd9ade910e0bbd SHA-1: 9d8d83857b7e72d5e969e96c7da271a44b376cfb SHA-256: 7cd0a5bcc84eb4ce5a3d871724a35d61122ff7b591253e2cce7787936f62f22e

154 Risk Score

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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://gettraff.ru/strik?utm_term=baldor+de+algebra+pdf In PDF document text
- https://jivexine.weebly.com/uploads/1/3/1/3/131380908/8d13f7c12f6cfa5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4463002/normal_5fa43c2b235d3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367299/normal_5fa742cd25b32.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370303/normal_5f98e8f798d3a.pdfIn PDF document text
- https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/979adffb65b27.pdfIn PDF document text
- https://tokitowopune.weebly.com/uploads/1/3/4/4/134498993/2684093.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/174c043e-5bcf-412f-9e78-55daf5d49b44/basic_business_statistics_13th_edition.pdfIn PDF document text
- https://s3.amazonaws.com/dusubonifu/32866152692.pdfIn PDF document text
- https://s3.amazonaws.com/sefukirexuwekij/channa_mereya_full_movie_free_720p.pdfIn PDF document text
- https://s3.amazonaws.com/mubemutolewe/zeridamoputik.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ed61.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED61	5220 bytes
SHA-256: `fc53887adb694cfa320d03a2f02d76fe846a6071fc3d2897a210cd9237bb1a0a`
`font_01_sfnt_off0000ff32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF32	11368 bytes
SHA-256: `4f0c3774175a8fa7696f08d655b296a204f0787e32895180611580933b807a22`

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