PDF malware analysis — malicious · 4b8d6bf85a8be7c2

MALICIOUS

PDF

40.3 KB Created: 2020-08-06 04:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5b8974ec4835114779df7abe24b40d99 SHA-1: b091e2e153c19487059770db2d90a7bcb201638e SHA-256: 4b8d6bf85a8be7c253b226528af60b32ea3791530c7e7ae7b10a197ba84c9f2d

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a large number of embedded links, many of which point to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. The primary attack vector appears to be a link farm designed to direct users to malicious infrastructure.

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/pify?keyword=rf+power+amplifiers+mihai+albulet+pdf
- http://files.chicagostatechamber.org/uploads/1/3/1/6/131606815/mofebibetaropuzonalu.pdf
- http://files.able-disabled.com/uploads/1/3/1/1/131164081/molewotenulimepis.pdf
- http://files.jamesapartments.cz/uploads/1/3/2/6/132680986/4708390.pdf
- http://files.iyengaryoga-concord.com/uploads/1/3/2/7/132711954/sabitorimewad.pdf
- http://files.xdesign4u.com/uploads/1/3/1/0/131069887/miwebew.pdf
- https://cdn.shopify.com/s/files/1/0437/8106/2817/files/95151136965.pdf
- https://cdn.shopify.com/s/files/1/0429/5009/9107/files/sixijotirinomutidu.pdf
- https://cdn.shopify.com/s/files/1/0436/4288/0160/files/2268513343.pdf
- https://cdn.shopify.com/s/files/1/0434/1320/9246/files/43382287769.pdf
- https://cdn.shopify.com/s/files/1/0432/7469/8912/files/aloe_vera_gel_forever_living.pdf
- https://cdn.shopify.com/s/files/1/0432/0083/9842/files/wegidikuwideligaro.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdf
- https://cdn.shopify.com/s/files/1/0430/0223/2983/files/pegabu.pdf
- https://cdn.shopify.com/s/files/1/0430/6026/5117/files/56689890284.pdf
- https://cdn.shopify.com/s/files/1/0430/4610/9341/files/14658389367.pdf
- https://cdn.shopify.com/s/files/1/0430/1737/1797/files/lupebemuzifutosipilokato.pdf
- https://cdn.shopify.com/s/files/1/0429/4000/6559/files/96751410517.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005344.bin` `1196264966efe96a1ae441f667b25357aa4061a230894ae116590aa7209fc064`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5344	5296 bytes
`font_01_sfnt_off00006551.bin` `99b8c05d3a230303b8de3b0c107433128cec0a236fe949d33b63996e98da80e7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6551	9572 bytes
`font_02_sfnt_off000085e5.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85E5	4324 bytes

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