Malicious PDF — malware analysis report

Static analysis result for SHA-256 8515ed1b0e1513d0…

MALICIOUS

PDF

50.8 KB Created: 2020-08-14 20:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffa3d69143ef14e476fb318ee845f289 SHA-1: c8f6ab118657b7f68082dd00cb57bd5b6714431d SHA-256: 8515ed1b0e1513d03dbdf6bad741843e3d9f8bd60c8361fcda9a3d231fb3eefb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or to distribute malicious content. One critical heuristic identified a link to a known malicious redirector service, 'ttraff.cc', which likely serves to obscure the ultimate destination of the malicious payload. The presence of numerous links, including one pointing to a redirector, strongly suggests a malicious intent to lure users to harmful sites.

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=android+canvas+draw+rectangle+example
    • http://files.senseabouthomeopathy.com/uploads/1/3/1/8/131871642/2612241.pdf
    • http://files.csunifc.com/uploads/1/3/0/7/130775393/1213447.pdf
    • http://files.birthbabiesbeyond.com/uploads/1/3/0/7/130739949/fcfc17e.pdf
    • http://wufujef.barneyspumps.com/uploads/1/3/2/3/132303382/432d4e1821188.pdf
    • http://manimubor.free-rein-ranch.com/uploads/1/3/1/6/131606617/kexavo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/85987113776.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6387/files/sexuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/88499952749.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/capek_rur.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/15220750128.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/42800779575.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/talixagamamuvet.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2137/files/45902594368.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/rotejegerenobovekapef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0438/2549/6221/files/gelarofinufad.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_off0000785b.bin
9a740b13be22f792c203faa906f4d8ec4c8362fd9f636b0b9667066f985982c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x785B 5604 bytes
font_01_sfnt_off00008b65.bin
7b23581aaff9cd5c3ef8864214efea064c6f51427b89cdd94cd0eaca44ff7cbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B65 10292 bytes
font_02_sfnt_off0000ae92.bin
78c0d5eaf51245a804487913fcc9590e306b63073d9fab4bc49c8efad51d19d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE92 6076 bytes