Malicious PDF — malware analysis report

Static analysis result for SHA-256 d396e0e6540e684d…

MALICIOUS

PDF

38.9 KB Created: 2020-08-02 08:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 070b9c70c5ce51d74eea463b011b7e97 SHA-1: f903e4bf86ba8e7d4f8e97a3f25eff5d573c5d77 SHA-256: d396e0e6540e684d0dba5eca2c1f6c58c171be10c6b4c7534e9e74f99a1c5684
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Caterpillar operators manual. This link, 'https://ttraff.cc/pify?keyword=caterpillar+operators+manual+pdf', is designed to lead users to further malicious content. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify, to potentially obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=caterpillar+operators+manual+pdf
    • http://files.greater-faith.org/uploads/1/3/1/4/131407148/pabegedogasikame.pdf
    • http://files.7500magazine.com/uploads/1/3/2/6/132680784/2553904.pdf
    • http://files.newstudiopreschool.net/uploads/1/3/0/7/130774993/c788908fe23db.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/286681493.pdf
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/1210762406.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/xipobitevegenurifa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/wukinimasolej.pdf
    • https://cdn.shopify.com/s/files/1/0440/3727/5813/files/ivory_hex_code.pdf
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/webufesekulagedab.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/77352721785.pdf
    • https://cdn.shopify.com/s/files/1/0429/0147/1388/files/90980173446.pdf
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/fenowepuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/juliz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/zojiberanedateke.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_off00005b2f.bin
595be01444b52360fc19d1ec215eb6b60931f5e1c6598805296350ae94026165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2F 5092 bytes
font_01_sfnt_off00006c5f.bin
19ab4137cf30bf2c99685f6a870c931080f9ad8147129317376828ce3bc52d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5F 10168 bytes

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