Malicious PDF — malware analysis report

Static analysis result for SHA-256 5580ab7c203f5626…

MALICIOUS

PDF

40.1 KB Created: 2020-08-08 04:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8486f88342cf58f7fec5efa9247df5b8 SHA-1: c4263e91db7b023de347ab81d7cb70566fd22f16 SHA-256: 5580ab7c203f56269671ca512b7417c2d670715f6fea08f3f2e40a91644fb8dc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, suggesting a lure for users seeking a specific PDF. 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=biology+12+ncert+book+pdf
    • http://files.youngcalebcarrblog.com/uploads/1/3/0/7/130738548/ba8eea1368.pdf
    • http://files.mdcsmith.com/uploads/1/3/0/9/130969469/7fb01d3fb51.pdf
    • http://files.gypsybootstrail.com/uploads/1/3/0/8/130813885/naladasakiwizav.pdf
    • http://files.movingmadesmooth.com/uploads/1/3/1/4/131408153/fc243b4a.pdf
    • http://wowivato.redeemwithgod.org/uploads/1/3/1/0/131070420/c18bd33c5e5863.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/jolimuperejutewuwines.pdf
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/62084374664.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pobilimej.pdf
    • https://cdn.shopify.com/s/files/1/0432/1119/4525/files/sesivomutes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/27560730039.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/dezufitizo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2346/5628/files/gogozejumamekewu.pdf
    • https://cdn.shopify.com/s/files/1/0450/4292/5726/files/adobe_editor_purchase.pdf
    • https://cdn.shopify.com/s/files/1/0435/8874/7423/files/9755223873.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/wii_u_shader_cache.pdf
    • https://cdn.shopify.com/s/files/1/0430/1789/6089/files/rawazazo.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_off00005e73.bin
73da2584d22d7aadfc225211bbc27ec93e07c63ca7b90224603de98a57132ad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E73 5476 bytes
font_01_sfnt_off00007141.bin
132422c3fb98d037e1a9b6a7856bb3b619a10f0427ba64ba47b766eeb0ad45d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 10136 bytes

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