PDF malware analysis — malicious · 7e69080f42f0001a

MALICIOUS

PDF

56.5 KB Created: 2020-08-24 10:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 346905b8ba87b5f5f5db4a2ce6df9017 SHA-1: c59be75823ae90eeb32859914860863315e1ddf7 SHA-256: 7e69080f42f0001ae2fddfa0f1525399b357bcac11a1173590ddde090ab16b2d

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be luring users to a malicious site via a seemingly innocuous PDF document.

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.ru/pify?keyword=airlift+performance+struts+knocking
- http://files.englewoodpilates.com/uploads/1/3/2/6/132681482/wakote_bononameba_womafivudawen_venekefub.pdf
- https://cdn.shopify.com/s/files/1/0430/9378/6791/files/25098991578.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98029452840.pdf
- https://cdn.shopify.com/s/files/1/0431/6761/3089/files/eduardo_galeano_espejos.pdf
- https://cdn.shopify.com/s/files/1/0438/3136/1686/files/linear_functional_analysis_rynne.pdf
- https://cdn.shopify.com/s/files/1/0430/0416/6297/files/92544440470.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedifoniwupub.pdf
- https://cdn.shopify.com/s/files/1/0450/0642/2184/files/makotebus.pdf
- https://cdn.shopify.com/s/files/1/0431/5670/1348/files/gijaru.pdf
- https://cdn.shopify.com/s/files/1/0429/1143/2867/files/whirlpool_duet_washer_owners_manual.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_off000096cb.bin` `da14c38b6f742a55d2c67287631aea493bca290d5e695cf02d9dd6b1e5fa7f56`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96CB	1672 bytes
`font_01_sfnt_off00009f05.bin` `f377b964c16d84da82aa254dfd7f08ef75be61a25482daa71d68bd5ad6e57329`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F05	5388 bytes
`font_02_sfnt_off0000b13e.bin` `6a89b2c731ad325f4c8b350b77c4bbff472b43402f26902a2be0be1b57dc75fb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB13E	10432 bytes

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