PDF malware analysis — malicious · 23a9518cd0dc630e

MALICIOUS

PDF

45.8 KB Created: 2020-09-08 19:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 07632d5c7fc8b379a381b7bac708a31a SHA-1: 75621036fb9b249a7ec375cc2e0802e0af29af3e SHA-256: 23a9518cd0dc630e587261dbca7b208cfbf5f1e85e3c0c9751db633119f93f4d

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.club'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to encourage user interaction with these links. The primary malicious IOC is the redirector URL, which is likely used to funnel users to a malicious site.

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.club/wix?keyword=garment+costing+format+in+excel
- https://static.usrfiles.com/ugd/b8c837_66ffbac10baa43a1afe90f3009dc55b7.pdf
- https://static.usrfiles.com/ugd/34ec99_7154b8da87ab4b2ab1e5c4b5a7269423.pdf
- https://static.usrfiles.com/ugd/5b604d_36a71eae39fd4a8384105e2eadf6ee6e.pdf
- https://static.usrfiles.com/ugd/92ee2b_b3b0d234fc90400fa61074c6292e18a1.pdf
- https://static.usrfiles.com/ugd/8dde66_541e9634313f49788a324ce554aa7fff.pdf
- https://static.usrfiles.com/ugd/01bc73_0f0bb43ecf0748baa84e024eadcaf69b.pdf
- https://static.usrfiles.com/ugd/df73ab_f952dab6beeb44319951904fcc58e549.pdf
- https://cdn.shopify.com/s/files/1/0465/2636/5854/files/flags_of_the_world_quiz_with_answers.pdf
- https://cdn.shopify.com/s/files/1/0433/1218/5499/files/gamecube_emulator_games.pdf
- https://cdn.shopify.com/s/files/1/0449/5484/5352/files/27710846175.pdf
- https://static.usrfiles.com/ugd/0bcf16_36835c1f26944c0785ed02defa9ddc46.pdf
- https://static.usrfiles.com/ugd/957eb4_05096f219a3d4cf4bc47ae58d4bd8a0c.pdf
- https://static.usrfiles.com/ugd/19103d_88c14e80ed9a465f8b299135961b2089.pdf
- https://static.usrfiles.com/ugd/3b6424_3f6fe5e962754ca8a020d003bddcdcd6.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_off00006572.bin` `f41d2efcc361433f0b6b292019b0f1bc04505de89fe16d0181a4d0bf2688c139`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6572	5300 bytes
`font_01_sfnt_off00007770.bin` `a18f203994bbec5af5a73481d567a1cc97ac94f791c8aff289125cd4279637a7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7770	16504 bytes

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