PDF malware analysis — malicious · 0726be73e0d864fe

MALICIOUS

PDF

65.2 KB Created: 2020-11-24 04:03:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 46b0f6470b7c6203b5379d2726d59988 SHA-1: ef31e61613468bdeb314995cfd9fca815795b5d0 SHA-256: 0726be73e0d864fe6ec03601de5c5e15f0d9d8ec6741f0d2e71ec6b814e238fe

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, identified as a link farm, and a primary external URI pointing to 'trafftec.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or SEO spam. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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=incredible+5+point+scale
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdf
- https://taroxeme.weebly.com/uploads/1/3/4/3/134358537/2598782.pdf
- https://cdn-cms.f-static.net/uploads/4374535/normal_5f8fc47e56d72.pdf
- https://xeruwuxopexok.weebly.com/uploads/1/3/4/4/134467304/807dd50eb.pdf
- https://cdn-cms.f-static.net/uploads/4375196/normal_5fb57429a5331.pdf
- https://fowimuwejagun.weebly.com/uploads/1/3/4/5/134529075/9080055.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/watajive/jazetexaxusurozufexujusuj.pdf
- https://uploads.strikinglycdn.com/files/19ad79a6-d72a-4ee3-afe0-c0f9294eb48c/pokemon_phoenix_rising_rom_download.pdf
- https://uploads.strikinglycdn.com/files/490400ee-6476-41a8-b2cc-399672c7c822/vorixuxemi.pdf
- https://uploads.strikinglycdn.com/files/fd91eff7-76f4-4e4a-a328-adcf0a2b717d/nowofudogapokevalodadab.pdf
- https://uploads.strikinglycdn.com/files/91040406-72c5-4110-8bcb-098a0e5dfa49/82863514723.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_off0000c2cb.bin` `391058ef04554a2bdcf7d55ec4be3019c4c4a717792e92d085bea71281dca4b8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2CB	5268 bytes
`font_01_sfnt_off0000d4be.bin` `1338a8071e3ba13079be8d6be11791fa0c25beea7f1c20089c52faba56e01fac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD4BE	10488 bytes

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