Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e40fbad59030aa2…

MALICIOUS

PDF

43.4 KB Created: 2020-08-25 04:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bdf41f3fb0edd5216c42bd4d83b6a14 SHA-1: dec2143d0fb95ada540d87c93aefd7271bb6700c SHA-256: 3e40fbad59030aa2b93ff32843a1f16952494bf8d789987bd651215e5e6eaed8
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.cc/pify?keyword=plenty+valley+christian+college+uniform+shop'. This URL is embedded within the document body, disguised with text related to a uniform shop. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify. The primary malicious IOC is the ttraff.cc redirector, which likely serves as a gateway to a malicious payload or phishing page.

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.cc/pify?keyword=plenty+valley+christian+college+uniform+shop
    • http://files.yefeart.com/uploads/1/3/1/6/131607662/kezubofigato_vuwixamubezo.pdf
    • http://fixik.noincineratornorthampton.org/uploads/1/3/0/9/130969723/9139230.pdf
    • https://cdn.shopify.com/s/files/1/0461/8479/2217/files/vobejijojatawukivoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6943/1189/files/15948245493.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8782/files/cell_culture_methods.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/gezamem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1269/files/odometer_disclosure_statement_washington.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/jagubajunedigofe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8596/2142/files/7289921513.pdf
    • https://cdn.shopify.com/s/files/1/0432/8131/8056/files/dream_of_californication_song.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/8._3_medians_and_altitudes_of_triangles.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0429/5373/6351/files/1952969483.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/lokililisofo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9975/7474/files/the_yellow_wallpaper_study_guide_questions.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/87032034236.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_off00006a42.bin
7ba27c768673ae1c99cf9a2922a5d0ae56b5c7bf460f4af52812ed9bf96e3698
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A42 5592 bytes
font_01_sfnt_off00007d26.bin
a3fdc37129197380fd99ba13aaa496727b97f585ad6a8e65a75d898ad9d52884
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D26 10404 bytes