PDF malware analysis — malicious · 0456a50e0471c754

MALICIOUS

PDF

63.6 KB Created: 2020-12-22 03:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a7a8afbe442c87c1e0f07bf6f1e7e9be SHA-1: 1e06eb6fc85a1289ccb2fdbd0d30cb50ea033874 SHA-256: 0456a50e0471c754fb6b87041b85b37ecf03bad882d6b0071c7be25ecbd08ad0

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary URLs, 'https://trafftec.ru/strik?utm_term=labyrinth+games+dc', is flagged as unknown reputation, suggesting a malicious intent. ClamAV detection and ML classification further confirm its malicious nature, classifying it as a phishing trojan.

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://trafftec.ru/strik?utm_term=labyrinth+games+dc
- https://cdn-cms.f-static.net/uploads/4373264/normal_5f9f621874594.pdf
- https://topizamo.weebly.com/uploads/1/3/4/4/134435864/6241383.pdf
- https://cdn-cms.f-static.net/uploads/4365634/normal_5fb5612646a44.pdf
- https://cdn-cms.f-static.net/uploads/4381289/normal_5f906b2d27968.pdf
- https://cdn-cms.f-static.net/uploads/4489440/normal_5fbf5ca51a066.pdf
- https://cdn-cms.f-static.net/uploads/4421983/normal_5fa0b54da4302.pdf
- https://cdn-cms.f-static.net/uploads/4485801/normal_5fc16aec3b86e.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/40a44adf-19f6-4142-9cfd-9099ad900513/60919616191.pdf
- https://uploads.strikinglycdn.com/files/011e1ad1-c7a0-4258-a645-fc35ff53a572/belle_et_la_bete_conte.pdf
- https://s3.amazonaws.com/biwubeleba/33751048298.pdf
- https://s3.amazonaws.com/peveziwoguxuzam/32307753747.pdf
- https://s3.amazonaws.com/gixawetopoli/sudoregodej.pdf
- https://s3.amazonaws.com/mejawiwomak/agoda_hackerrank_test_android.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_off0000bab3.bin` `a93a6e19383d5b9d3489d569078a711a55aa8112955fa2387d9fcfc0daf6ac4d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBAB3	5504 bytes
`font_01_sfnt_off0000cd4a.bin` `31a3106faa9e9678cee829104e9197dc32b50cb5897dad5c2624232a1ac2d160`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD4A	10808 bytes

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