PDF malware analysis — malicious · 153d17354b832628

MALICIOUS

PDF

36.0 KB Created: 2020-08-29 17:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8eecf5e631157188ced7a1fb20d1474d SHA-1: 5509fa42271b5fa235afd2989c74dac3e856ce1b SHA-256: 153d17354b832628853666171b958db275e603e18a20f230bb8ee2d7b598868b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for movie downloads, which aligns with the malicious redirector's URL. The presence of many external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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.cc/wix?keyword=rockstar+full+movie++480p+openload
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/0049ca_d12ce17d75cb45d5b475d80e7e77ac0e.pdf
- https://static.usrfiles.com/ugd/e5a943_deb9b590c49f40febb85f8198ea36c82.pdf
- https://static.usrfiles.com/ugd/b8c837_b773e220c0374784937e1a949d98038a.pdf
- https://static.usrfiles.com/ugd/b8c837_8bcff15cfa1c4370b1d950ab64693aab.pdf
- https://static.usrfiles.com/ugd/83b1b3_b145a590884d44c886d0f7835f2150c0.pdf
- https://static.usrfiles.com/ugd/136d07_72be7e4996a7483197822b34f53f50de.pdf
- https://static.usrfiles.com/ugd/b8c837_6ed78aad2bad426683c752065a27b131.pdf
- https://static.usrfiles.com/ugd/b8c837_915fbe5ade9346ce8f67f7844ead7270.pdf
- https://static.usrfiles.com/ugd/b8c837_564deff84aeb4a55a3c3a274bbc38376.pdf
- https://static.usrfiles.com/ugd/b8c837_351a181d98fa4a3eb7301eebd9f2f107.pdf
- https://cdn.shopify.com/s/files/1/0430/4066/9849/files/78140358683.pdf
- https://cdn.shopify.com/s/files/1/0432/6014/9910/files/4645525029.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_off00004c6d.bin` `a52b8424af965cc03bf58ea239a03767bd53b65e3ffb44bfa24e92eeec003ce0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4C6D	5856 bytes
`font_01_sfnt_off0000604f.bin` `70b3513aeb617cb4430c08552cb17714155cef4a99ef0b48715ee445eee4b57b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x604F	10216 bytes

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