Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e18f0d24b2e88ec…

MALICIOUS

PDF

44.9 KB Created: 2020-08-24 03:32:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a19de6e6b64c24ca0a29d979caeb1be SHA-1: 1e64ebe5810c175578ed558f5376fa1db5cf9038 SHA-256: 4e18f0d24b2e88ecfcfc50a71ecf27ba08b60e3a0397f2c69eea56155a1ab08c
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 ttraff.com. The document body, though heavily obfuscated, contains the same URL and references an IQ test, suggesting a social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious redirector. No scripts were extracted from this sample.

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=general+iq+test+questions+and+answers+pdf
    • http://salotavu.northwoodilluminations.com/uploads/1/3/1/6/131606055/1dff61d5046dc4.pdf
    • http://files.theriverrunsthroughus.uk/uploads/1/3/0/7/130775186/zivuvuluja_surilan.pdf
    • http://files.exploringteacher.com/uploads/1/3/2/6/132682655/5bcc1.pdf
    • http://vikidawap.indigoroadstudio.com/uploads/1/3/0/8/130814328/sekinasivumukukoneg.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/90491944838.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/fisumubet.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/92890540859.pdf
    • https://cdn.shopify.com/s/files/1/0449/8512/2984/files/mourning_ends_part_2.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5753/files/bizudunekulezujuzuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6440/files/36958652988.pdf
    • https://cdn.shopify.com/s/files/1/0433/8194/8567/files/riwuduleguzoninatufugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/15964397547.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_off00006ffa.bin
6e59f96339f9646522f2b0023755c94560a4ffc8a91b12abbc936ae08350b2ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFA 5284 bytes
font_01_sfnt_off0000821a.bin
c9c9658c4a7b0d8eaf7eb2ee7f20770f05af3a8f4263412ab7dc33c692fcf957		 pdf-font-stream PDF embedded font (sfnt) at offset 0x821A 10860 bytes

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