PDF malware analysis — malicious · b75662cf05885d11

MALICIOUS

PDF

65.5 KB Created: 2020-11-24 21:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6c5d33f02650aab4768cd74441a81bd1 SHA-1: d10709a8dc887fbd775e04809ea71bcd4b9b3af5 SHA-256: b75662cf05885d11c2e8c22be4352faae5c4bcfa37f6ced43cc74841ad85a760

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a large number of external links, suggesting it functions as a link farm or SEO manipulation tool. One of the embedded URLs, 'https://trafffi.ru/strik?utm_term=mazda+cx+5+key+fob+battery+dead', indicates a potential phishing lure related to car key fobs.

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://trafffi.ru/strik?utm_term=mazda+cx+5+key+fob+battery+dead
- https://jajedasas.weebly.com/uploads/1/3/4/2/134234666/1820053.pdf
- https://cdn-cms.f-static.net/uploads/4366984/normal_5f90198bc21ac.pdf
- https://sedonefuwetupo.weebly.com/uploads/1/3/4/6/134669082/kutaf.pdf
- https://cdn-cms.f-static.net/uploads/4365563/normal_5fb70d9e557aa.pdf
- https://wuwenivavubujer.weebly.com/uploads/1/3/1/4/131437756/3056898.pdf
- https://gulijigomun.weebly.com/uploads/1/3/4/3/134350957/kazuzasulivu.pdf
- https://jedifubebevaze.weebly.com/uploads/1/3/4/8/134873515/f7c1ce56aa.pdf
- https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/gedemeti_vemopu_nurowetovideler.pdf
- https://fupebabo.weebly.com/uploads/1/3/4/6/134601971/135e164d58.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/ganubatebedoxez/chsaa_volleyball_uniform_rules.pdf
- https://s3.amazonaws.com/fadedosi/ktec_ac_adapter_100-240v.pdf
- https://s3.amazonaws.com/lopadivupudexa/quote_lead_in_examples.pdf
- https://s3.amazonaws.com/dutuzanob/lenubakon.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c45e.bin` `4269f67242cdf964d9cb033d8307bdba5495adf617c544fdc251e6ffe6b46ab3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC45E	5356 bytes
`font_01_sfnt_off0000d6d6.bin` `f506b7262f90c57bc9422860c3140aebc6301add9e105af6fa923899267172d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD6D6	10004 bytes

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