Malicious PDF — malware analysis report

Static analysis result for SHA-256 b56369cf60e2fd5d…

MALICIOUS

PDF

53.7 KB Created: 2020-08-08 16:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a6633f4feb6fff258ca343412dba73a SHA-1: 1ca29713dbedc790e4c81ba4cfc2e8f19368977b SHA-256: b56369cf60e2fd5de8ecf56db45ed3d8e99cef637ae404c6b6ed14787433a53f
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a tactic to drive traffic to malicious infrastructure, potentially for phishing or malware distribution. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is driven by the embedded links.

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/wb?keyword=antonyme%20anglais%20pdf
    • http://files.stonecirclepress.com/uploads/1/3/2/6/132682585/5083095.pdf
    • http://files.thelonewolfdojo.com/uploads/1/3/1/3/131398573/tofuzove-rurig-tomisire.pdf
    • http://files.eyewearsociety.com/uploads/1/3/2/6/132683014/jididevesun.pdf
    • http://files.22ninthstreetu707.com/uploads/1/3/0/7/130739227/52c293b53b6fb5.pdf
    • https://cdn.shopify.com/s/files/1/0441/2493/0200/files/wuwilaxusufal.pdf
    • https://cdn.shopify.com/s/files/1/0437/8427/4081/files/tawudanoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/58592590659.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/election_results_2020_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0434/8149/7766/files/1515691663.pdf
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/55455587917.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/ditukiwovodevoxelelariku.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/mupanogazarexelikupejo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/microcrystalline_cellulose_msds.pdf
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/70109914797.pdf
    • https://cdn.shopify.com/s/files/1/0437/8954/9726/files/19184243762.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_off00008743.bin
84c53da63f87659ae4773f79b893026c124e2c45734e3bf7c12419f9b4d5d833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8743 5356 bytes
font_01_sfnt_off0000997d.bin
a9b5ca2d8413abfa0c506c8a385683a7d286e59f72f9772240fa7f99ab7b2996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x997D 15868 bytes

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