PDF malware analysis — malicious · 6c48bf73b7f802f9

MALICIOUS

PDF

63.5 KB Created: 2021-01-13 22:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 09fcf8a6675045dac6726ab9cfcfa400 SHA-1: b6276ca24bca7510c61df0d0874df4f77b92e756 SHA-256: 6c48bf73b7f802f9981508e0207fdc6e660a98242c930ad61e7c885a6ab73d11

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of a malicious URL embedded within the document points to a phishing lure, likely intended to redirect users to a site that hosts further malicious content or exploits.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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=construction+project+management+a+complete+introduction+pdf
- https://cdn-cms.f-static.net/uploads/4469863/normal_5fdc41252d02a.pdf
- https://site-1177660.mozfiles.com/files/1177660/9236689423.pdf
- https://static.s123-cdn-static.com/uploads/4416136/normal_5ff29a4756174.pdf
- https://static.s123-cdn-static.com/uploads/4405186/normal_5fee2580eb6ab.pdf
- https://cdn.sqhk.co/bitaxukezor/9Thdric/baseball_9_innings_2011.pdf
- https://site-1173482.mozfiles.com/files/1173482/81559485739.pdf
- https://cdn.sqhk.co/komajekolino/gcSz8gi/72100516375.pdf
- https://cdn-cms.f-static.net/uploads/4409257/normal_5faee01c85b2a.pdf
- https://cdn.sqhk.co/murofoli/hdBjfha/live_neon_wallpaper_apps.pdf
- https://cdn-cms.f-static.net/uploads/4413455/normal_5f9b3cf3d45ae.pdf
- https://cdn.sqhk.co/gikunixa/dFeLVgf/jepisosasuvu.pdf
- https://cdn.sqhk.co/giwumazusew/iiiGjfo/wolesafirikusowepalegad.pdf
- https://site-1171105.mozfiles.com/files/1171105/briton_996_door_closer_data_sheet.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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_off0000bbbb.bin` `c7bb41a3969dc42850882830539f331dd057ab9750fde78528de57db65348929`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBBBB	5456 bytes
`font_01_sfnt_off0000ce31.bin` `95d5f2509dfdc82373b81f12bbead35dfa1ad79211f6bbe1bcb87e5631a266b6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE31	10052 bytes

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