PDF malware analysis — malicious · c59ab8f1fd3db229

MALICIOUS

PDF

36.9 KB Created: 2020-09-02 00:36:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cfe02f5dbac93652d950d99d601075a3 SHA-1: 7101f479267228d64e279b27c2b4534de2c90f0b SHA-256: c59ab8f1fd3db229841762f3446e587ced73c3e1f49448672839c51a26619d22

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which are SEO-themed lures. One critical heuristic identified a link to known malicious redirector infrastructure, specifically `https://ttraff.cc/wix?keyword=gangster+squad+full+movie+free`. The document body, though heavily obfuscated, also contains this URL, suggesting a social engineering attempt to trick users into downloading potentially 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=gangster+squad+full+movie+free
- https://cdn.shopify.com/s/files/1/0437/7359/1701/files/fukagam.pdf
- https://cdn.shopify.com/s/files/1/0429/1713/4502/files/87102663536.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdf
- https://cdn.shopify.com/s/files/1/0433/7300/2906/files/mokumarumazo.pdf
- https://static.usrfiles.com/ugd/73c254_7f3015eab0c2407f899eea6c916d488f.pdf
- https://static.usrfiles.com/ugd/625844_750e34ef8eca4fe4b7dc902532b30a06.pdf
- https://static.usrfiles.com/ugd/ddb60a_44f3b7a6b58240549c7f3184e62152ef.pdf
- https://static.usrfiles.com/ugd/271e65_3d20f92a22c2450caf99f626eb5e7507.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
- https://cdn.shopify.com/s/files/1/0447/6076/0471/files/54035100734.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdf
- https://cdn.shopify.com/s/files/1/0432/9105/0137/files/mozajevugi.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_off0000502d.bin` `57d4ae8992aee5c526dfff7cd911200ca431101eb1c97ed4dd0331d3869d9d4a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x502D	5444 bytes
`font_01_sfnt_off000062a5.bin` `b02bae122710e0a22a52d591704470fdd4cddc02c5a012a82d938769605e6fb5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62A5	10712 bytes

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