PDF malware analysis — malicious · 1a6a70f5941cf4fe

MALICIOUS

PDF

55.7 KB Created: 2020-08-30 07:50:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e5da2d3d9051dd49b8be714bfbf6a09d SHA-1: 435577f75f72ffccd17493e0e1b0895322ca3311 SHA-256: 1a6a70f5941cf4fec663e504345b348a67dbff811805518f6bf4e4229c5f7e6e

130 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure related to Accenture test papers, directing users to click a link. This link, 'https://ttraff.com/wix?keyword=accenture+written+test+papers+with+solutions+pdf', is identified as a malicious redirector. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, suggesting a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, and the document body was heavily obfuscated.

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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=accenture+written+test+papers+with+solutions+pdf
- https://static.usrfiles.com/ugd/b8c837_f8d5a0d320d74fe3a77e16583bf1b600.pdf
- https://static.usrfiles.com/ugd/66c878_d4d0414624f04cb7a3ac2949a37c8d57.pdf
- https://static.usrfiles.com/ugd/89064d_97b68caf30dc45779fe2115f4a64ebac.pdf
- https://static.usrfiles.com/ugd/b8c837_0c7359982ed24ee2baf6faef56330ab3.pdf
- https://static.usrfiles.com/ugd/6908d7_e69d208ace6a457fa5a9b53a17b6849c.pdf
- https://static.usrfiles.com/ugd/e2b09b_44efb6882e6241788c1794623a82d30d.pdf
- https://static.usrfiles.com/ugd/b8c837_d7abb618046a4f458bb58e871afd2125.pdf
- https://static.usrfiles.com/ugd/b8c837_22813a1d775f470e99dea0f87da2c60b.pdf
- https://static.usrfiles.com/ugd/0baf77_f330cea7a74d4cc5b6781904a7f649f9.pdf
- https://static.usrfiles.com/ugd/b8c837_759fa00d1b73406ab04d855dd876ea7d.pdf
- https://static.usrfiles.com/ugd/824332_65dca40ce6bf4012b3dfc7506171e1b2.pdf
- https://cdn.shopify.com/s/files/1/0434/2041/8198/files/crossbows_and_catapults_rules.pdf
- https://cdn.shopify.com/s/files/1/0429/4931/2665/files/farm_machinery_and_equipment.pdf
- https://cdn.shopify.com/s/files/1/0440/7135/4533/files/23124359342.pdf
- https://cdn.shopify.com/s/files/1/0429/7188/9817/files/gobebexenitidopenit.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_off00009ad2.bin` `5ab8a0cd49ad492ee9e554309d9eed0ce6415ae42096c90b288e54ba4d7ca279`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9AD2	5324 bytes
`font_01_sfnt_off0000acf0.bin` `a4db718745013ea84d6cc432b03d44e2bcd4fbc5d12971e3c8fa7176f7d14482`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xACF0	10764 bytes

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