Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe9c5bcb351a116…

MALICIOUS

PDF

40.6 KB Created: 2020-08-17 02:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dc306dbd9835e51bd07bbc48adcd7ae SHA-1: 8e568c4c16ab0270fb54a0c3f9823fabd939d80b SHA-256: 3fe9c5bcb351a116b22797a180968c6f43ed6b2234ee1e17cba2a29d1ac08136
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=princess+diaries+book+1+pdf`. This URL is likely part of a phishing or malware distribution chain. The document also contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the malicious intent.

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/pify?keyword=princess+diaries+book+1+pdf
    • http://files.jimgatesrhc.com/uploads/1/3/1/4/131453146/482832b3.pdf
    • http://nuxuriv.personalhibachichef.com/uploads/1/3/1/4/131437508/tarelo-bofakojaval-vosawomujejiv-puvim.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/uefa_champions_league_fixtures_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/los_angeles_freeway_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/5265/3973/files/lukedeluxisiwop.pdf
    • https://cdn.shopify.com/s/files/1/0439/2471/7723/files/lab_report_acceleration_due_to_gravity.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1039/files/assignment_abroad_times_weekly_newspaper.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/32852990965.pdf
    • https://cdn.shopify.com/s/files/1/0434/1841/9349/files/taxogusatefitademi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6025/6159/files/33126044084.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0225/files/1802015952.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/55008443355.pdf
    • https://cdn.shopify.com/s/files/1/0438/4079/8885/files/54865029729.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.

FilenameKindSourceSize
font_00_sfnt_off00006127.bin
506d5135f16750190f1fe7ed32d9b1ff353686ec815d3346ed07c2112bc53c2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 5376 bytes
font_01_sfnt_off0000736c.bin
d5785945b23b6f2a218eab6eba15f94949456981bca9b0f38912e6e6731136e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 10144 bytes

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