PDF malware analysis — malicious · 237c423dd5f1b278

MALICIOUS

PDF

72.6 KB Created: 2020-08-29 22:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8896fb4c6e0c60c6a6ed192f1ac4d26e SHA-1: 87a3fd9fb87157a4c45ad4ba70d896bd7366ed70 SHA-256: 237c423dd5f1b278cc6f79f92dff19eb08f59af8423564c4fdc9ab66304a097f

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a malicious redirector link disguised as a motherboard manual download. This link points to `https://ttraff.ru/wix?keyword=g33mo2+motherboard+manual`, which is flagged as malicious. The document also exhibits characteristics of a link farm, with numerous embedded links, some of which are benign but likely serve to obscure the malicious redirect. The presence of a visual download button further supports the lure.

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.ru/wix?keyword=g33mo2+motherboard+manual
- https://cdn.shopify.com/s/files/1/0447/8432/0661/files/origin_and_development_of_sociology_and_anthropology.pdf
- https://cdn.shopify.com/s/files/1/0434/8523/3304/files/70372478086.pdf
- https://cdn.shopify.com/s/files/1/0431/8239/1451/files/antenna_theory_and_design_3rd_edition.pdf
- https://cdn.shopify.com/s/files/1/0437/3640/0037/files/xewelosulimixukavetezik.pdf
- https://static.usrfiles.com/ugd/ceb2e8_aa9f334e100e4654a13fa43d3cc60255.pdf
- https://static.usrfiles.com/ugd/b8c837_62609fc3d8e44fb5af0221e5eaf5e002.pdf
- https://static.usrfiles.com/ugd/b8c837_a8de1a510741490685f51a983956bd75.pdf
- https://static.usrfiles.com/ugd/b8c837_37ac19f2d00742f4942760de3ddf7d0c.pdf
- https://static.usrfiles.com/ugd/b8c837_2cd2368c0c364fc0b2f561985575212e.pdf
- https://static.usrfiles.com/ugd/b8c837_f702f7ca07b3449f80b3d98b7fa04ab3.pdf
- https://static.usrfiles.com/ugd/12745a_48ad04f097274073971b431fc7a6ec14.pdf
- https://static.usrfiles.com/ugd/b8c837_b7f2f76f30004373b87fe5da67f0af9e.pdf
- https://static.usrfiles.com/ugd/5fd5c1_795155e6a58a4b69b42404448f305c11.pdf
- https://static.usrfiles.com/ugd/e3ff21_38e6e2681b534405a305f34926249917.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_off0000d27c.bin` `492993759f949b61962819fbf81b5ee6e1651eb9401e45757fccbd6a5f37116f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD27C	5352 bytes
`font_01_sfnt_off0000e485.bin` `7f719f5bdbc841946432208b46c7c8e06d97303e2ca570cb2f7e54cd1064c685`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE485	15464 bytes

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