PDF malware analysis — malicious · 1d1ee6f37caa7e42

MALICIOUS

PDF

40.2 KB Created: 2020-09-07 21:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 09a2fe2db67da30f5856bf3d856110ff SHA-1: 70ca1dfe2002e782d0dec32ddae921dc6a583698 SHA-256: 1d1ee6f37caa7e4260674e9a39f81b8828c2cb30a8e0c6cde47f9bbfc1a9b948

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, indicative of a link farm. The primary malicious URL identified is https://ttraff.club/wix?keyword=fantasy+football+rankings+ppr+cheat+sheet, which is likely used for phishing or malware distribution. The document body, though heavily obfuscated, contains references to the same URL, reinforcing its malicious intent.

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.club/wix?keyword=fantasy+football+rankings+ppr+cheat+sheet
- https://cdn.shopify.com/s/files/1/0453/2230/5691/files/58905253846.pdf
- https://cdn.shopify.com/s/files/1/0435/3681/0135/files/mrc_video_impression_guidelines.pdf
- https://cdn.shopify.com/s/files/1/0432/9462/1862/files/83955801219.pdf
- https://static.usrfiles.com/ugd/a0d21a_8b9243f601ab42ecabb912126b01cddb.pdf
- https://static.usrfiles.com/ugd/0d089b_1efb0abb46064e9a8fd36524abd689ea.pdf
- https://static.usrfiles.com/ugd/8d46c2_7458430fa72f4b0db33bfda42227641c.pdf
- https://static.usrfiles.com/ugd/2f8cea_8306c006f3f74f1a98f3e01c8198154d.pdf
- https://static.usrfiles.com/ugd/2c8d66_1e1df901266e41929e507ce30dfe17d3.pdf
- https://static.usrfiles.com/ugd/b8c837_c9a476d06f4149d8891dea33996ddab3.pdf
- https://cdn.shopify.com/s/files/1/0434/8379/1526/files/mobedimiponikopek.pdf
- https://cdn.shopify.com/s/files/1/0430/2798/8634/files/basic_english_grammar_azar_4th_edition.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_off00005e80.bin` `b7b47e7de55943d3da2224ce55fd77d1ed47bcc7ca76b953cf0e5e1e1ac67195`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E80	5540 bytes
`font_01_sfnt_off0000715d.bin` `76583b28ff9b576885212ff47fc332f0ea82a906ccb5d02a68baf8ad25ab7176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x715D	10164 bytes

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