PDF malware analysis — malicious · 03b9f6a9b8f969bd

MALICIOUS

PDF

68.1 KB Created: 2020-12-29 22:39:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: b2e422df519a57adb3d495d1cfe5e19d SHA-1: 1b0f8dbbf7b6bb156b33bf09c5f3ad561a30852b SHA-256: 03b9f6a9b8f969bd1fff0600ac319ee72b6489ea99a03706ab2b37a3996ce58b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'ggtraff.ru'. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9981

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://ggtraff.ru/123?utm_term=the+cold+war+study+guide+answers In PDF document text
- https://cdn.sqhk.co/samigimas/VnggyIu/stretches_for_flexibility_splits.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377380/normal_5f9d58b9e6531.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365621/normal_5f86fe937c581.pdfIn PDF document text
- https://gikowotezura.weebly.com/uploads/1/3/4/4/134493608/birozuzafuje.pdfIn PDF document text
- https://rakuwogu.weebly.com/uploads/1/3/4/8/134858672/bigepitijorigir.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/zobuwubedak/undertale_secrets_wikia.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/81f66429-8403-4639-a943-52e7937e4ef2/2006_saturn_ion_owners_manual.pdfIn PDF document text
- https://s3.amazonaws.com/tabobujimo/fabugoseveti.pdfIn PDF document text
- https://s3.amazonaws.com/xapidajovaji/58381175194.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_off0000cfc0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCFC0	5344 bytes
SHA-256: `16f5e9eb0d6c160000cbf990f4cf855b985888c6047cf14a0b62c0cc57f1ac3f`
`font_01_sfnt_off0000e200.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE200	9944 bytes
SHA-256: `f8010b904045af166aee8869ed88d82bfe5bf5f895e571c663dbf2332f09b8f4`

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