PDF malware analysis — malicious · b16fa08af58ff973

MALICIOUS

PDF

39.6 KB Created: 2020-09-01 21:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3b3797004d44d47128ad53949cabfac7 SHA-1: 204f44d2ac135749d5e3df79a5db0c60b26cc18f SHA-256: b16fa08af58ff9734895f5436447f1ebcbeb7c810483e2d55532faa3cfc6d646

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/pify?keyword=arap+sabunu+form%25C3%25BCl%25C3%25BC+koh'. The document body, though heavily obfuscated, contains this URL and other links to static.usrfiles.com, suggesting a lure to external malicious content. The presence of a link farm heuristic further indicates a malicious intent to distribute links. No scripts were extracted from this sample.

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.link/pify?keyword=arap+sabunu+form%25C3%25BCl%25C3%25BC+koh
- https://static.usrfiles.com/ugd/b50c55_98c73c31cbdd4e4fbe3ad400be815f1f.pdf
- https://static.usrfiles.com/ugd/81d6a4_fed9383b36214555ac0a2a358c0d51a6.pdf
- https://static.usrfiles.com/ugd/b8c837_b2905813d1b94269b7e4016a43023e5c.pdf
- https://static.usrfiles.com/ugd/e8506d_913ac9452e84410ab0fdc2bdf14e3fc9.pdf
- https://static.usrfiles.com/ugd/36f25b_a3580de04d74485d86b8adf8e15e0b38.pdf
- https://static.usrfiles.com/ugd/aec2ea_8fcf3393d54d445d8dbb8c9a0196de2e.pdf
- https://static.usrfiles.com/ugd/b8c837_c773afb0a1c040b3abcb07471c7f7c08.pdf
- https://static.usrfiles.com/ugd/7041e4_e211f80536544e16aeefb678be05555d.pdf
- https://static.usrfiles.com/ugd/23e9be_2741470b5a6648658c064aa96bd0e43b.pdf
- https://static.usrfiles.com/ugd/c1108c_aad0d53aec04455b952fcd05bf6a7edb.pdf
- https://cdn.shopify.com/s/files/1/0434/2516/9565/files/ms_dos_user_guide.pdf
- https://cdn.shopify.com/s/files/1/0431/6214/0826/files/nalor.pdf
- https://cdn.shopify.com/s/files/1/0433/9168/0673/files/resistance_3_trophy_guide.pdf
- https://static.usrfiles.com/ugd/b8c837_9dedc56197484533b1324d7af58c9926.pdf
- https://static.usrfiles.com/ugd/0f9ef0_b2ba02b4fbb44373a60209cbd4595ce3.pdf
- https://static.usrfiles.com/ugd/429b25_2e5140520c8f40b0a2eff09af304dff3.pdf
- https://static.usrfiles.com/ugd/b8c837_6d237b10b96e43ccbd019bb6ae23e325.pdf
- https://static.usrfiles.com/ugd/07e02c_4a17793e2d2646af8c65fc1d6b1c4039.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_off00005b7c.bin` `d3631434e15e8b588d373027fa27a898f4cd7fda307aff8e568b41aa3725256b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B7C	5452 bytes
`font_01_sfnt_off00006da3.bin` `0cb320526319a2f0e554314e86f6d440b6c21a3b31f0d47ec14e7dda296173c3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DA3	10872 bytes

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