PDF malware analysis — malicious · bada74d4a634d61c

MALICIOUS

PDF

44.5 KB Created: 2020-08-30 22:17:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a96a42f9625be3b6825e15a9e4424404 SHA-1: 9e508c78e403ef9077980b4ae4396d24c0b483aa SHA-256: bada74d4a634d61c74f80916ed987fa0338b71643652906e45c269db572e92be

152 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, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=workout+sheets+pdf' and a large number of other URLs, suggesting a link farm or redirection strategy. The primary attack pattern is likely social engineering to trick the user into clicking the malicious link.

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.cc/wix?keyword=workout+sheets+pdf
- https://static.usrfiles.com/ugd/b8c837_c52825cdeb7a4195b3b19cbfbc2a66c6.pdf
- https://static.usrfiles.com/ugd/63d3ad_a86450420bb74f3eb5159977c1ac13d6.pdf
- https://static.usrfiles.com/ugd/3cb679_d4e510ebff864b7e9b1ddbe23326a073.pdf
- https://static.usrfiles.com/ugd/b8c837_14528a42e0e348f6a6ba60112970bfb4.pdf
- https://static.usrfiles.com/ugd/2ac701_a60496fea9cd4994b56c632bf683ee74.pdf
- https://static.usrfiles.com/ugd/b8c837_216199422f274026a51ee88479231818.pdf
- https://static.usrfiles.com/ugd/b8c837_5ab25414c9c64c709e10baf17f97e10b.pdf
- https://cdn.shopify.com/s/files/1/0432/6332/8411/files/61493498949.pdf
- https://cdn.shopify.com/s/files/1/0437/8171/8167/files/lufofegekoke.pdf
- https://cdn.shopify.com/s/files/1/0431/6043/6887/files/79690565191.pdf
- https://cdn.shopify.com/s/files/1/0433/4790/2623/files/36933438516.pdf
- https://static.usrfiles.com/ugd/87a178_d6bf6021a5884899993d9d44139e8e4c.pdf
- https://static.usrfiles.com/ugd/b8c837_886c79b0d0ea46f991cd3efe39c99d4e.pdf
- https://static.usrfiles.com/ugd/b8c837_7471b1917eb94287b999ede0c3e7c742.pdf
- https://static.usrfiles.com/ugd/2f07a1_9c1c3fe970384c09bba9e0093244efeb.pdf
- https://static.usrfiles.com/ugd/4826f5_9a4d1915b02f47dbb0d7d6dbdd5bb126.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_off00006356.bin` `7940e2e54868dc59903ea32fd861ab5e6446afabd94e5461e005fc2438b9b49c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6356	4692 bytes
`font_01_sfnt_off00007371.bin` `2f179ae8a6f97470366cd8c340eb10400a2a6a3f7e0718c6ff2121d85636cbd4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7371	10608 bytes
`font_02_sfnt_off0000973c.bin` `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x973C	4324 bytes

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