PDF malware analysis — malicious · 366ef5f3072b9441

MALICIOUS

PDF

42.5 KB Created: 2020-09-01 04:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 48be06384fa00fa8f9360a9e59080636 SHA-1: 99033d09b03c681a08b259c20ed2f5b56afa929a SHA-256: 366ef5f3072b944123a0146f2cecfb5e553deca87eeae61cb48fe0622a371d5f

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to `static.usrfiles.com` and appear to be part of an SEO link farm. One critical heuristic identified a link to `ttraff.com`, a known malicious redirector. The document body, though heavily obfuscated, contains the URL `https://ttraff.com/wix?keyword=basic+long+division+worksheets+with+remainders`, suggesting a lure related to educational materials that redirects to malicious infrastructure. The presence of numerous PDF links and a malicious redirector indicates a likely phishing or malware distribution attempt.

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/wix?keyword=basic+long+division+worksheets+with+remainders
- https://static.usrfiles.com/ugd/158fb9_b75353eb6c45457dbb9baf3274bfd352.pdf
- https://static.usrfiles.com/ugd/b8c837_39e6caa1872b43a28dbce8683b806f40.pdf
- https://static.usrfiles.com/ugd/10e3af_d4d75612454740679b2dbe683bd21e46.pdf
- https://static.usrfiles.com/ugd/d9d1f5_c903c9343a3745ff8ed99641aeea1583.pdf
- https://cdn.shopify.com/s/files/1/0434/6704/7077/files/9449756975.pdf
- https://cdn.shopify.com/s/files/1/0428/4504/4892/files/47735547664.pdf
- https://cdn.shopify.com/s/files/1/0450/2411/6894/files/metformin_1000_mg_cost.pdf
- https://cdn.shopify.com/s/files/1/0437/2499/6758/files/jijaduwikadiragizote.pdf
- https://static.usrfiles.com/ugd/0fdb6d_e6fedcf133844adba7e06b55359bc6c1.pdf
- https://static.usrfiles.com/ugd/f55bec_c3c1f75247e4402391941791a386679e.pdf
- https://static.usrfiles.com/ugd/696b8a_2c16a5ee1edb430888fce2c6fcce6c24.pdf
- https://static.usrfiles.com/ugd/b8c837_fbc05465ae0a4ac48cead0826860b0c9.pdf
- https://static.usrfiles.com/ugd/34ec99_4022790b7f4344adad2da8a16a37ba49.pdf
- https://static.usrfiles.com/ugd/b8c837_8fbb4db14bcf4200b898f6145b9b1716.pdf
- https://static.usrfiles.com/ugd/b8c837_dfe136bcdc9e448dbf4c3a112f7ebd87.pdf
- https://static.usrfiles.com/ugd/9c43ec_7ea98b230f584e4882327402ab5e988b.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000065cc.bin` `25971de91b589a4ed293e544d2e84bead2b6f57b62bd8d9153d7593f73aa3110`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65CC	5620 bytes
`font_01_sfnt_off000078cc.bin` `d75bee09e9a7c46afbcc8b9321c2e646abfa9643d83520367c5efec1efabced8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78CC	10504 bytes

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