PDF malware analysis — malicious · 2727c5a4e603ce42

MALICIOUS

PDF

45.8 KB Created: 2020-08-01 03:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c2bfceca4d6625ecd388558c43c8aac7 SHA-1: 14fbae59d31e3a2d65b79f7803d92737f78bae0e SHA-256: 2727c5a4e603ce4213d5e8e2616d85fdcb62321a692e4ec26bad02520195dc60

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and references 'cheap flights', suggesting a lure. The presence of numerous embedded links, many pointing to Shopify domains, indicates a link farm or redirection strategy. No scripts were extracted, but the primary malicious activity appears to be directing users to a potentially harmful URL.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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=scott%2527+s+cheap+flights+reddit
- http://files.stmaryselmbridge.org/uploads/1/3/1/3/131380985/c172952798f6ec.pdf
- http://files.bringmorehappy.com/uploads/1/3/1/4/131454355/50bca6bb3839ba1.pdf
- http://files.lonelyartsclubpambula.com/uploads/1/3/1/4/131453588/mematuje-sibimat-vobogenos.pdf
- https://cdn.shopify.com/s/files/1/0436/9186/8313/files/21971599129.pdf
- https://cdn.shopify.com/s/files/1/0438/0976/7584/files/91268605446.pdf
- https://cdn.shopify.com/s/files/1/0431/0673/0144/files/bobejafutasokexelezokof.pdf
- https://cdn.shopify.com/s/files/1/0430/1163/7401/files/89293250221.pdf
- https://cdn.shopify.com/s/files/1/0429/3863/0300/files/22247736499.pdf
- https://cdn.shopify.com/s/files/1/0431/2157/4049/files/nabujikejojaranajifewex.pdf
- https://cdn.shopify.com/s/files/1/0429/3623/8236/files/59015444840.pdf
- https://cdn.shopify.com/s/files/1/0428/8220/3801/files/36781351687.pdf
- https://cdn.shopify.com/s/files/1/0433/2843/8427/files/20784737907.pdf
- https://cdn.shopify.com/s/files/1/0431/6620/4066/files/24007796107.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gatafuruzakelimosileraji.pdf
- https://cdn.shopify.com/s/files/1/0437/0300/9430/files/zuzaxituvapusojazazasej.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_off000065fb.bin` `5189aaa7bcc0582ed6a35ce220b02f8e29e5830b4d1120753c5fd9ac31c4b10e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65FB	5236 bytes
`font_01_sfnt_off000077d9.bin` `5ab69bcf9d310eebdd5234a7d5f2241505fb782afbda003c01fc3d9172c7caa4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77D9	10620 bytes
`font_02_sfnt_off00009c1d.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C1D	4324 bytes

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