Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1f6ca8914e0e1b…

MALICIOUS

PDF

52.4 KB Created: 2020-08-19 00:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 525b95e312c10efd3c758cd65c37a06a SHA-1: 336014c4a600effa979a1fdd80781b3734831d25 SHA-256: fc1f6ca8914e0e1b614010ea3796684a0986093f53377f960ab90bf1ea5833f1
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=silpat+cookie+sheet+liner+in+stores'. This redirector likely serves to obscure the final malicious destination. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a large number of links, many pointing to Shopify domains, indicates a link farm or SEO poisoning tactic to increase visibility.

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.com/pify?keyword=silpat+cookie+sheet+liner+in+stores
    • http://butid.housedesignerbuilder.net/uploads/1/3/2/6/132695278/rosajupepazarari.pdf
    • http://xakotuja.katiejacksonbeautyworks.com/uploads/1/3/1/4/131408614/976295.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/rutetimipimen.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/xarobero.pdf
    • https://cdn.shopify.com/s/files/1/0437/7175/6698/files/fekinarasipeba.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/fuzekuta.pdf
    • https://cdn.shopify.com/s/files/1/0436/1083/3058/files/bearing_and_azimuth.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97503793953.pdf
    • https://cdn.shopify.com/s/files/1/0428/9301/7247/files/vista_128fbp_installation_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/aws_certified_solutions_architect_blueprint.pdf
    • https://cdn.shopify.com/s/files/1/0435/8265/2579/files/minecraft_realms_error_500.pdf
    • https://cdn.shopify.com/s/files/1/0434/2244/9814/files/pugizuwixesisulak.pdf
    • https://cdn.shopify.com/s/files/1/0430/2992/1943/files/46679593281.pdf
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/stihl_ms_210.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/forenuwumuduwise.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/23558748707.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008157.bin
a298b3f94e0bc2b9e232b17c8aded5b448c0be95808c461d52fa9f5461e95fee
pdf-font-stream PDF embedded font (sfnt) at offset 0x8157 4976 bytes
font_01_sfnt_off00009215.bin
d1286058af305be8a3a5dc37d75c96f5a4fe933e98638fbd91361109869a3d17
pdf-font-stream PDF embedded font (sfnt) at offset 0x9215 10720 bytes
font_02_sfnt_off0000b69b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB69B 4324 bytes