PDF malware analysis — malicious · 1fe8d9c4d9b1739d

MALICIOUS

PDF

101.8 KB Created: 2020-08-29 17:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ab4549bcdf93fdb732747f01da5824db SHA-1: 5512da885e94ca14e3b2b86e03e51b39dd3fa679 SHA-256: 1fe8d9c4d9b1739d7e8a91f3fa1c90a5505580f8be8e6820155e27ccd4b6675f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, suggesting an attempt to generate traffic or distribute content through numerous external links. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as the primary lure.

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.com/wix?keyword=sweet+peta+pie+peta+jensen
- https://static.usrfiles.com/ugd/b8c837_7768f1073c7d4edfb0f5b8553f792ac1.pdf
- https://static.usrfiles.com/ugd/b8c837_c17f3298405947f49bc50135515a1ae4.pdf
- https://static.usrfiles.com/ugd/b8c837_3f5225e6451e4c2489c941d403514265.pdf
- https://static.usrfiles.com/ugd/b8c837_3654629aa2064e9a974cda5dc80845c2.pdf
- https://cdn.shopify.com/s/files/1/0431/8488/1827/files/66239852948.pdf
- https://cdn.shopify.com/s/files/1/0431/0636/9703/files/curacion_de_cateter_venoso_periferico.pdf
- https://cdn.shopify.com/s/files/1/0464/7639/4648/files/tafesiluxebuv.pdf
- https://cdn.shopify.com/s/files/1/0440/8573/9685/files/fusionner_les_en_un_document.pdf
- https://static.usrfiles.com/ugd/8e1900_d1f5cc0ac0c040e3bf3d580154d0ae29.pdf
- https://static.usrfiles.com/ugd/b8c837_8a4153a7e19d47fa837278ad535180e7.pdf
- https://static.usrfiles.com/ugd/b8c837_75ba2b75efb54c2ebb19e4767196e22d.pdf
- https://static.usrfiles.com/ugd/b8c837_2f5f02556bc54717b8328048df782305.pdf
- https://static.usrfiles.com/ugd/b98abb_89e4dc9df136417db63b39baddf1e96b.pdf
- https://static.usrfiles.com/ugd/b8c837_e224d62e4625486586df7525c34f32e9.pdf
- https://static.usrfiles.com/ugd/b8c837_4cad3769a64b436eaf0587d4bffad57c.pdf
- https://static.usrfiles.com/ugd/b8bbd7_54ec75a6bb3d4686ac27cbd691cb6885.pdf
- https://static.usrfiles.com/ugd/576447_ec4b549550b540fe86ccb387e7c7a254.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_off00015314.bin` `060f457e02945a42e4e3e48d10165ce011e9d3ef117679d15fac1601fb78da73`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15314	4956 bytes
`font_01_sfnt_off00016413.bin` `e564f6c94f924eaaf9778f32292a948d27a4f842d3a4443449120f8892031edd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16413	11220 bytes

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