PDF malware analysis — malicious · 94be619ef0bdee9b

MALICIOUS

PDF

39.4 KB Created: 2020-09-06 23:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d01a654752965963547e00404534c753 SHA-1: dc3a3b6450ec8f67db3ce00ef53412eb59ce0662 SHA-256: 94be619ef0bdee9b5a697f10de45384ad5a745f39c3d66318af6872a97a6cc0b

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically `https://ttraff.me/wix?keyword=deus+ex+1+weapon+guide`. The document body, though heavily obfuscated, also contains this URL and references to other PDFs hosted on `static.usrfiles.com`. This indicates a phishing attempt designed to redirect users to malicious content, likely for further exploitation or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
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.
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://ttraff.me/wix?keyword=deus+ex+1+weapon+guide
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fodafozisejuleluz.pdf
- https://cdn.shopify.com/s/files/1/0431/0702/5056/files/4208297625.pdf
- https://cdn.shopify.com/s/files/1/0433/4059/5352/files/introduction_to_statistical_quality_control_7th_edition.pdf
- https://static.usrfiles.com/ugd/6812d7_b3303f55674b4706b13f1c2bf9a86dd3.pdf
- https://static.usrfiles.com/ugd/b6bf5b_0e77a10835024f4e95b944a7fca1f2ae.pdf
- https://static.usrfiles.com/ugd/62e2c1_278aeb00b6f24ffbaed06b8dde40eba3.pdf
- https://static.usrfiles.com/ugd/0049ca_e2d68a0580e247bb87892b6a6ca4c079.pdf
- https://static.usrfiles.com/ugd/02631b_c080ebc398fd41bf93d44ca3aef0639f.pdf
- https://static.usrfiles.com/ugd/05e3ad_065ffcbc32064c1c8a8586d4a8356a02.pdf
- https://static.usrfiles.com/ugd/930050_96c742e8f30946b18a969eef91b56e90.pdf
- https://static.usrfiles.com/ugd/b81754_0cc0dc894ca34ae4ad62051e3209ae4b.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005beb.bin` `41d1458f59c6570534895fee6c0cb850d4de04ea223b0066ee17411ecb1f16d9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BEB	5212 bytes
`font_01_sfnt_off00006de2.bin` `6cf2923b1dc770c1ee7c05cf4cb8dca8aa82c5cf1f07886b8994910edd885a84`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DE2	10308 bytes

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