PDF malware analysis — malicious · dc10b95e238cf4c8

MALICIOUS

PDF

76.5 KB Created: 2021-01-03 22:21:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 8131743095874fcddee00b954a011853 SHA-1: 7a09562a7d5b60328e5ceb78a4da1f89e57ff730 SHA-256: dc10b95e238cf4c84043df2b092189503f8a9fe98334ea873db3fa9e9be32c59

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/123?utm_term=logos+pathos+ethos+mythos'. This indicates the document's primary purpose is to lure the user to this malicious URL. While no scripts were explicitly extracted, the nature of PDF redirects often involves embedded JavaScript to facilitate the redirection, hence the inclusion of T1059.007.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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
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://traffine.ru/123?utm_term=logos+pathos+ethos+mythos In PDF document text
- https://cdn.sqhk.co/tajiwikiter/hOfjehh/how_to_raise_a_child_with_adhd.pdfIn PDF document text
- https://cdn.sqhk.co/xodokopav/jhhggjh/xmeye_for_mac.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4419415/normal_5fe29d89e5ca6.pdfIn PDF document text
- https://cdn.sqhk.co/ralapogifur/ia1Mhg1/good_pizza_great_pizza_chapter_2_day_78.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369911/normal_5fdf46eba77bb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419629/normal_5f967d2935b6d.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wovigebi/answer_back_meaning_in_chinese.pdfIn PDF document text
- https://s3.amazonaws.com/bubeto/85433005717.pdfIn PDF document text
- https://s3.amazonaws.com/xeroguru/jacked_up_chevy_silverado.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_off0000ed7f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED7F	5148 bytes
SHA-256: `18d00d6a6ff222ca16a1ad011da83f445ef3f3034c65eb32595bf8c1b6dc1219`
`font_01_sfnt_off0000fef3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFEF3	10828 bytes
SHA-256: `4fcb20c8fccd994fac2d4f54b35c63b2b4825daafd2bd6ec7215ffb006fedccc`

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