Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d79663cee24e9d0…

MALICIOUS

PDF

53.5 KB Created: 2020-08-09 19:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d41c415dda15a6cb7d97f9f9ff66e18 SHA-1: d7cb4ba26aad104e86e8503373d0b74e99c7458b SHA-256: 3d79663cee24e9d0a1fd769bb49b7346003547ca89e739a372051168dd36b464
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to ttraff.com, which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same search query as the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious URL is https://ttraff.com/pify?keyword=abirami+anthathi+pathigam+lyrics+in+tamil+pdf.

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=abirami+anthathi+pathigam+lyrics+in+tamil+pdf
    • http://files.wcpreschoolva.com/uploads/1/3/1/0/131070351/dutaxobizidifi.pdf
    • http://files.huntsvilledecks.com/uploads/1/3/0/7/130776591/zazepejuwof_nexudozorudo_nulajapovagelom.pdf
    • http://files.thetimewarpgaming.com/uploads/1/3/0/8/130874012/8122470.pdf
    • https://cdn.shopify.com/s/files/1/0440/2518/4421/files/61849559499.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/tanat.pdf
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/apsrtc_student_bus_pass_application.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/32355677872.pdf
    • https://cdn.shopify.com/s/files/1/0431/9612/1248/files/fidemavulesedizewom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wemulaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/0668/7389/files/rebekegatojetubogabex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5968/files/86350875814.pdf
    • https://cdn.shopify.com/s/files/1/0429/0071/7727/files/81178499351.pdf
    • https://cdn.shopify.com/s/files/1/0439/0223/8875/files/pmay_offline_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/52725154747.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_off00008dd4.bin
aad1085f923ba1879d684b561f5123e459ce9c60e219d3d557b26dd2ec026db6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD4 5800 bytes
font_01_sfnt_off0000a171.bin
555c05336a58b9f273ca38501d839624514f1a3997011e105ce5727da53a00c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA171 11316 bytes

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