PDF malware analysis — malicious · 9e007738cf2d3421

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 18:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f286a4260656258a2d6091566ed01e93 SHA-1: 8b0178808dbc95b6e0aebc2ec3fe91b78f651686 SHA-256: 9e007738cf2d34218152de10d2fed6c224ac4a8d161dbdc4a0edbcc523d44c74

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, with 'static.usrfiles.com' being a dominant host. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the same redirector URL.

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.com/wix?keyword=p+m+c+ka+full+form
- https://static.usrfiles.com/ugd/909b15_b7dc200408d64fe79825f6c68c4d043c.pdf
- https://static.usrfiles.com/ugd/b8c837_af3d921be24f4dfd8509b19225a31eba.pdf
- https://static.usrfiles.com/ugd/704566_8ab7c18845cb4c01af0d382d5eaf7377.pdf
- https://static.usrfiles.com/ugd/b8c837_8341c4b656a844e8b5af283556d54cae.pdf
- https://static.usrfiles.com/ugd/625844_8c580cdeabaf4e75b2a9c1835958ca66.pdf
- https://cdn.shopify.com/s/files/1/0428/8475/9711/files/ethical_dilemma_in_research.pdf
- https://cdn.shopify.com/s/files/1/0432/2417/0664/files/69103020975.pdf
- https://cdn.shopify.com/s/files/1/0427/8878/2236/files/genagijefip.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.pdf
- https://cdn.shopify.com/s/files/1/0432/3780/2146/files/20279270816.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005bce.bin` `c71583f54f95fe43240f2553555807b9197571c0710da062cb03c443f249a7b6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BCE	4912 bytes
`font_01_sfnt_off00006c76.bin` `f17ed3147413ef21915f8ac63bd8911a601c7c40b24e677a7dc3a1dd1ae5d5ed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C76	10192 bytes
`font_02_sfnt_off00008f88.bin` `4117a98cb3afbad5cbc544530046ce739997efd6ac29405d7642643385f8f9b6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F88	4348 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.