Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff282f97261efa31…

MALICIOUS

PDF

47.7 KB Created: 2020-08-29 20:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3afdeb7fb7874fd05d04ccd824e94df5 SHA-1: ee2eab61c101ea8ee4bdcd78f845b13a9b85067e SHA-256: ff282f97261efa317e13371a9d91560344ed2d06e6c2d3adafef7d989977317f
120 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 'https://ttraff.ru/wix?keyword=reptile+enclosure+plans'. This URL is presented within the document body, disguised as 'reptile enclosure plans', indicating a social engineering lure. The presence of a large number of embedded links, many pointing to benign Shopify URLs, suggests a link farm or SEO poisoning tactic to mask the malicious redirector. 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.ru/wix?keyword=reptile+enclosure+plans
    • https://cdn.shopify.com/s/files/1/0440/6139/3061/files/oxford_latin_course_book_1.pdf
    • https://cdn.shopify.com/s/files/1/0437/7391/9393/files/anemia_megaloblastica_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7719/files/59726249106.pdf
    • https://cdn.shopify.com/s/files/1/0430/8933/0325/files/titaxigagimamomop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/63991413354.pdf
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/32137058839.pdf
    • https://cdn.shopify.com/s/files/1/0448/4897/1938/files/vasamu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5215/4532/files/86503233580.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/insurance_certificate_request_template.pdf
    • https://static.usrfiles.com/ugd/b8c837_4efb80aefb604543b9579b418baff67c.pdf
    • https://static.usrfiles.com/ugd/b8c837_1de87f838e7b449388f40ad979f462a4.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_4d95a094deb24fd8ace2bc7bb67e1715.pdf
    • https://static.usrfiles.com/ugd/8b2c09_44afb05ff0f249a2859e121c63f0833f.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0428/files/77539768039.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68876684382.pdf
    • https://cdn.shopify.com/s/files/1/0434/3188/6998/files/14475755143.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_off00007bb1.bin
09b5de88c638bc1bec98aa24b5e8cc235915d64fbc5aa9404d893534e7cdb1ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB1 4936 bytes
font_01_sfnt_off00008c83.bin
14f06256f57a4d45c55acf1a3e9de6c704b3abbf476f765fc22042bdfc540ec1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C83 10864 bytes

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