PDF malware analysis — malicious · d16f14a40d9e9aeb

MALICIOUS

PDF

39.3 KB Created: 2020-08-30 17:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c77e184244dbae1bfad614e243ec6417 SHA-1: e5a1ef8b6962522b38c648286e0ba22e872f993e SHA-256: d16f14a40d9e9aeb0427c79d47d76070e849f54d93339029c2a2d114eb8bbef4

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link disguised as a manual download for a 'Remington model 742 manual'. This link redirects to 'https://ttraff.cc/wix?keyword=remington+model+742+manual', which is flagged as a malicious redirector. The document also contains a large number of external PDF links, many of which point to 'static.usrfiles.com', suggesting a link farm or SEO abuse tactic. The presence of a visual download button lure further supports the malicious intent.

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.cc/wix?keyword=remington+model+742+manual
- https://static.usrfiles.com/ugd/a64c8c_0bae4737b8ea4476a7a88559ca5fcacb.pdf
- https://static.usrfiles.com/ugd/b8c837_718bb31baaeb4d43b6c8e52a6d7fb111.pdf
- https://static.usrfiles.com/ugd/39cb9d_6e0dcefe55eb46918e863dab8f63dccc.pdf
- https://static.usrfiles.com/ugd/b8c837_8d82c79d688e4fb28c8073b1860b3c42.pdf
- https://static.usrfiles.com/ugd/b8c837_f56671191947460eb84ea13a712d7700.pdf
- https://static.usrfiles.com/ugd/238140_77d02d2a2ff5417896fc36a9a19e5d75.pdf
- https://static.usrfiles.com/ugd/de65f7_fe9a188162a640419130dfce60eb0775.pdf
- https://static.usrfiles.com/ugd/cafc24_c66dcafa90614a4a933c1961c71d8a72.pdf
- https://static.usrfiles.com/ugd/a467d2_ad52d5b68e3e48a6aeeff853206a3562.pdf
- https://cdn.shopify.com/s/files/1/0431/7796/7778/files/86440313972.pdf
- https://cdn.shopify.com/s/files/1/0437/7778/6018/files/union_grievance_form.pdf
- https://cdn.shopify.com/s/files/1/0437/6133/6471/files/how_to_overcome_cultural_barriers_in_communication.pdf
- https://cdn.shopify.com/s/files/1/0429/4826/4089/files/guwegugagerela.pdf
- https://cdn.shopify.com/s/files/1/0429/2021/4681/files/dejike.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_off00005ba1.bin` `02071f66ac0cee7e19639ff3fb4d1c08a4a6f2637c105da5e53a32ff62ec134f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BA1	5180 bytes
`font_01_sfnt_off00006d3a.bin` `b9884a573942587121f664978988d0264b51c61e534260a58e0e2c5ea65a83f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D3A	10552 bytes

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