PDF malware analysis — malicious · 78459fb36b7885ba

MALICIOUS

PDF

60.4 KB Created: 2020-08-31 07:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7d05ddb673e8153abc8b43d1957b1cdd SHA-1: 21cee501044bc168c89e9fda85638b3f74e177b7 SHA-256: 78459fb36b7885ba4dbd6260fd93671185a698d04feab87d5bb2f461577eac61

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=men+at+work+jimmy+neutron'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that its primary purpose is to lure users to harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=men+at+work+jimmy+neutron
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/7211/9199/files/femerafolelojuf.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedapefe.pdf
- https://cdn.shopify.com/s/files/1/0437/2388/2645/files/dadobotunesiwemajozit.pdf
- https://cdn.shopify.com/s/files/1/0427/6797/4556/files/sigovudobababazezerupi.pdf
- https://cdn.shopify.com/s/files/1/0438/2906/7933/files/gabebezuwosugubojib.pdf
- https://cdn.shopify.com/s/files/1/0432/7417/4624/files/28523444591.pdf
- https://static.usrfiles.com/ugd/9e41f0_b96b3c5e839d4c7eb783e995bb3d9ff7.pdf
- https://static.usrfiles.com/ugd/b8c837_6ecce2c2441a42d0b8ca3ab46d43b0e0.pdf
- https://static.usrfiles.com/ugd/16a96a_51ba7009daed41e8aba9f46469ff417a.pdf
- https://static.usrfiles.com/ugd/5e81b9_66eb1f6e72a34111bf126432005d59fc.pdf
- https://static.usrfiles.com/ugd/b8c837_bf551a7e46aa44c3a958e961fa977820.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b046.bin` `5a84cc461e96d722eed970d13b775aa6530ace26a37efc3e8ca9d8ef6574fde5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB046	4960 bytes
`font_01_sfnt_off0000c134.bin` `c8c3e64d741023c0b3a928627f68ece564cefa61c01cac82905b83d2121fc4a2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC134	10472 bytes

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