PDF malware analysis — malicious · 881f26fa73e7b997

MALICIOUS

PDF

47.3 KB Created: 2020-08-31 10:33:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 96d957091a9aaef0a754c6b531f77379 SHA-1: 8775725c69cfdf45bf703e46c1cb2f0d732087b3 SHA-256: 881f26fa73e7b997c73f3ac5a5b15567304d0dd4ef89195ba7cba84f29f5c4f3

150 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, pointing to 'https://ttraff.ru/wix?keyword=sony+vegas+pro+12+32+bit+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C'. This indicates the document is designed to redirect users to malicious infrastructure, likely for malware distribution or phishing. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links.

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.ru/wix?keyword=sony+vegas+pro+12+32+bit+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C
- https://static.usrfiles.com/ugd/eaf48f_fbcf97b6d6ab41289eec6f186c3cd791.pdf
- https://static.usrfiles.com/ugd/b8c837_2010f912381441b5922af6398d0e7fb7.pdf
- https://static.usrfiles.com/ugd/fb5067_471141d95d6649598b065cb876b3b24a.pdf
- https://cdn.shopify.com/s/files/1/0428/5900/4070/files/71363480702.pdf
- https://cdn.shopify.com/s/files/1/0465/8040/0295/files/mimavotozowadeba.pdf
- https://cdn.shopify.com/s/files/1/0430/6426/2818/files/sevezizalelopani.pdf
- https://cdn.shopify.com/s/files/1/0432/7351/9269/files/86873730295.pdf
- https://cdn.shopify.com/s/files/1/0435/2730/7423/files/34896075338.pdf
- https://cdn.shopify.com/s/files/1/0437/4183/9514/files/htseq-_count_vs._rsem.pdf
- https://cdn.shopify.com/s/files/1/0432/2626/7806/files/38940964170.pdf
- https://cdn.shopify.com/s/files/1/0434/9739/0244/files/masiguro.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lafiku.pdf
- https://cdn.shopify.com/s/files/1/0430/9801/3863/files/5th_grade_math_standards.pdf
- https://cdn.shopify.com/s/files/1/0432/8125/2512/files/94198227485.pdf
- https://cdn.shopify.com/s/files/1/0459/9529/4887/files/myers_ap_psychology_3rd_edition.pdf
- https://cdn.shopify.com/s/files/1/0438/7792/5019/files/fivorigosoxuvozedijeduzir.pdf
- https://cdn.shopify.com/s/files/1/0429/5249/1159/files/porowofoneroziwen.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_off00006740.bin` `be5f2100938368516deb18330823d792e5d681705c51564f00be5f9b86bac42c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6740	6336 bytes
`font_01_sfnt_off00007c5f.bin` `fd7aa7d191af6438c95a6baf4274195a60f7463f0c56544346226fed260795a6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C5F	16176 bytes

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