PDF malware analysis — malicious · 619d42fc85a2bd30

MALICIOUS

PDF

40.4 KB Created: 2020-10-02 14:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: fed3fbf00d81c55d75b6aca486fb20a6 SHA-1: edfe9b3872f506877da932db94b56153aa2bb158 SHA-256: 619d42fc85a2bd30bf922dd3de9b54a4e5c2d2e60eede58a55c612901da567c1

94 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://cctraff.ru/strik?keyword=slug+it+out+cheats'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for further compromise.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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://cctraff.ru/strik?keyword=slug+it+out+cheats In PDF document text
- http://pogodok.cubpack42.com/uploads/1/3/1/4/131453872/jarusedofun-kamirugabafon-tagujipo-tutax.pdfIn PDF document text
- http://lilidux.bradythrelfall.com/uploads/1/3/0/8/130874320/duson_gozokabusa_tevanujinuvitu_wakumokug.pdfIn PDF document text
- http://files.rileymeadowsstable.com/uploads/1/3/1/3/131398067/diremeko.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/f09539ff-513d-4f98-b708-5aa86156878f/silileweri.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/06f89ee5-cb71-4553-b50f-5ce21db1298f/megavame.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6915f5c7-4df2-4399-b880-86729efb5774/xexexosozulul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4782/8133/files/gejobowebepidul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2441/6931/files/jekaxedanipapanujika.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3304/8741/files/32344142091.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_off0000617e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x617E	5068 bytes
SHA-256: `fcf6ef448a536ce44b032d117ccc3b651090ec9254187636cc86521c51bddd89`
`font_01_sfnt_off000072bd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72BD	10116 bytes
SHA-256: `d18680626024705c828af27b4f842cf553acd8a6b5a110a34f981322250948dc`

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