PDF malware analysis — malicious · 9be811e709057b83

MALICIOUS

PDF

36.1 KB Created: 2020-08-30 20:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 66aa929814e206dc721c2f1ebff21a03 SHA-1: 8671885483ef8b8e7def77a4fe649d088ef6f2ca SHA-256: 9be811e709057b83e0566d71a877e0e5fa9778a283871ddce69a408f777c402c

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=soluciones+grammar+bank+english+file'. It also exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0455/4637/3285/files/bridge_abutment_design_example.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to trick users into clicking malicious links under the guise of educational content.

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/wix?keyword=soluciones+grammar+bank+english+file
- https://cdn.shopify.com/s/files/1/0455/4637/3285/files/bridge_abutment_design_example.pdf
- https://cdn.shopify.com/s/files/1/0437/8270/1214/files/rugiboveb.pdf
- https://cdn.shopify.com/s/files/1/0434/1163/6381/files/pcsx2_going_too_fast.pdf
- https://cdn.shopify.com/s/files/1/0441/0654/7352/files/wakokoxata.pdf
- https://cdn.shopify.com/s/files/1/0431/8740/4968/files/cma_part_1_free_textbook.pdf
- https://static.usrfiles.com/ugd/4f270c_d8b386d1d3254481977d3064fcd5a86d.pdf
- https://static.usrfiles.com/ugd/5d2cf3_ea06f914531e48209ee3bb4631b63265.pdf
- https://static.usrfiles.com/ugd/b8c837_15d987383e264efbaaf12855d5cf5ee2.pdf
- https://static.usrfiles.com/ugd/529dbf_c11d8f88deb64185b411240375579ee8.pdf
- https://static.usrfiles.com/ugd/856cea_968d1f11991f44babb7b4a48aa10c896.pdf
- https://cdn.shopify.com/s/files/1/0431/8812/5857/files/sibimumuwelizuzukibive.pdf
- https://cdn.shopify.com/s/files/1/0432/5664/3739/files/vejudemifot.pdf
- https://cdn.shopify.com/s/files/1/0430/5852/8405/files/veni_creator_spiritus_ocp.pdf
- https://static.usrfiles.com/ugd/b8c837_7963a5d28ff3418eb938050d1d49058c.pdf
- https://static.usrfiles.com/ugd/65b209_d61de1331f6a4dcfafa5db713bc0f364.pdf
- https://static.usrfiles.com/ugd/d5415a_3e06b06995db4af98de3d6255af82332.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_off00004e1c.bin` `9703a0a5e1138b0e0272410dfbaea91002849cf6db4cf1627fb77187960db104`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E1C	5600 bytes
`font_01_sfnt_off000060f1.bin` `587a3d3c59e619b12737e844da3ca974e33b0917efde33fbffca2f550651dbe4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60F1	10068 bytes

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