Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54420a6e3e35411…

MALICIOUS

PDF

44.4 KB Created: 2020-08-02 06:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d433db4767d766b040fabe8b44c7026 SHA-1: f0a128db9b7e8cd4d0bd1ecea5cd12bea69c2513 SHA-256: d54420a6e3e3541184d0d95108fa3e5de0db53651c3aadec4d1647415dbecf16
120 Risk Score

Malware Insights

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

The PDF contains a link farm with 17 external links, many pointing to Shopify domains, and a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.com/pify?keyword=talk+incoherently+jabber+crossword, is identified as a malicious redirector. This indicates the document's primary purpose is to lure users to malicious sites, likely for phishing or malware delivery.

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=talk+incoherently+jabber+crossword
    • http://files.beaverhollowhomestead.com/uploads/1/3/1/4/131406629/031d62ca1d0.pdf
    • http://files.kohlerfitness.com/uploads/1/3/2/8/132815054/bamixulawat.pdf
    • http://files.andy-buchan.co.uk/uploads/1/3/1/4/131456012/luxirewesafeke.pdf
    • http://files.fsc-nationwide.com/uploads/1/3/1/3/131398507/kodiluruzamoso.pdf
    • http://files.thecometzone.com/uploads/1/3/1/4/131452949/xupuwedazo_ritofuwufu_waseporuzome.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/vobudutexodezokujexujula.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/sinenekevotiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5219/files/33578960295.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/fokagulofipetesekulisufad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/wukidegamupatavagum.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/54789644380.pdf
    • https://cdn.shopify.com/s/files/1/0428/5349/9046/files/ff14_archaic_enchanted_ink.pdf
    • https://cdn.shopify.com/s/files/1/0428/4055/5676/files/tefadux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdf
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/jigulefikajoveluruvugewoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/76421279202.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_off00006115.bin
85488c2b8b735377cc0d01b452c199df0a3135f24633ee7b5eabe0823859b062
pdf-font-stream PDF embedded font (sfnt) at offset 0x6115 5240 bytes
font_01_sfnt_off000072e0.bin
317b6de1c980896f48906461a8437449febb02002f9760f859d2e731ffaad05e
pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 10632 bytes
font_02_sfnt_off000096a4.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x96A4 4324 bytes