Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca98fdb086cf9309…

MALICIOUS

PDF

42.6 KB Created: 2020-08-01 19:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6448d041ab9775f8ff170ed722e0c3c7 SHA-1: 7b04a11eff9ad090276662fbaaf8f93dcb4db8d4 SHA-256: ca98fdb086cf93097eb862f9072814f1a5d21fc1623810e826c723f1b4320237
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, indicating a link farm or SEO manipulation tactic. One of these links, 'https://ttraff.com/pify?keyword=flavor+wave+oven', is identified as a malicious redirector. The document body contains garbled text but also includes the malicious URL and several Shopify-hosted PDF links, reinforcing the link farm and redirection attack pattern. No scripts were extracted, limiting the analysis to the PDF structure and embedded URLs.

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=flavor+wave+oven
    • http://files.queensofourbeautifulplanet.com/uploads/1/3/1/3/131397971/8463441.pdf
    • http://files.remus-emsermann-lab.org/uploads/1/3/0/7/130775969/787161.pdf
    • http://files.elgatothecat.com/uploads/1/3/0/8/130813301/5751710.pdf
    • http://files.horshamtreesurgeons.co.uk/uploads/1/3/1/1/131163890/165eeadab28c.pdf
    • http://files.kgsa.org.au/uploads/1/3/2/8/132814303/geniwov.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/govazepiperogutowugofit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4831/2738/files/gopumizaditukedixadoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/craigslist_philadelphia_craigslist_org.pdf
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/zenudimuziwoketokukamel.pdf
    • https://cdn.shopify.com/s/files/1/0435/6859/5112/files/rumuwonuji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/65028690125.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8459/files/bubapixemivoki.pdf
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/2373995692.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/mikepogalomekudajisal.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/1890288162.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/jepegabolizadedamuper.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37629755229.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/50573841205.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_off0000699f.bin
e55ea60632fc72eb2f3faab0994d811bec0f5d151bd1b32de8c7b8260db7edec
pdf-font-stream PDF embedded font (sfnt) at offset 0x699F 4608 bytes
font_01_sfnt_off0000796f.bin
42419e8940d5b2446532c37a72b32b0757b53ff15e70d9f48f37910cab7a6204
pdf-font-stream PDF embedded font (sfnt) at offset 0x796F 10664 bytes