PDF malware analysis — malicious · ace264ec6487dce3

MALICIOUS

PDF

38.6 KB Created: 2020-08-12 12:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b788ad548e2dc57838e31e9aefe33d8a SHA-1: be63533cee49d1f8bf7314decae3ffcabee2ce58 SHA-256: ace264ec6487dce3a0ad8de54b9439afd3f7ed594539071bc4cbc722f232d3b1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL, suggesting a lure. The presence of many external PDF links indicates a link farm strategy to improve search engine ranking for the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=bohemian+rhapsody+piano+pdf+jarrod+radnich
- http://files.loveletters.website/uploads/1/3/1/4/131454098/8211979.pdf
- http://files.karensartzone.com/uploads/1/3/1/0/131070859/8516276.pdf
- http://files.shadowcaststudios.com/uploads/1/3/1/4/131453484/pasixu_rajepekodug.pdf
- http://files.zportman.com/uploads/1/3/0/8/130874627/nejajedozufejanoxifi.pdf
- https://cdn.shopify.com/s/files/1/0431/4185/7448/files/61456914165.pdf
- https://cdn.shopify.com/s/files/1/0435/5804/3807/files/cinema_4d_rigging_tutorial.pdf
- https://cdn.shopify.com/s/files/1/0431/2278/6466/files/65688819141.pdf
- https://cdn.shopify.com/s/files/1/0434/4827/1000/files/padigudok.pdf
- https://cdn.shopify.com/s/files/1/0438/0898/1152/files/map_of_the_world_download.pdf
- https://cdn.shopify.com/s/files/1/0433/7316/6744/files/losoxuvizagofuf.pdf
- https://cdn.shopify.com/s/files/1/0428/1712/6563/files/nazuximusijimiwarav.pdf
- https://cdn.shopify.com/s/files/1/0430/6799/8359/files/94813212586.pdf
- https://cdn.shopify.com/s/files/1/0434/2058/2050/files/7876558763.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdf
- https://cdn.shopify.com/s/files/1/0429/2778/4095/files/gipewewibedopafikotifa.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
- https://cdn.shopify.com/s/files/1/0432/9163/9968/files/wibasov.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_off00005412.bin` `06f95be49ae6ae3651ee0cd3253cec44406b3cf1b6be1fcf9abb1d606abd6334`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5412	5588 bytes
`font_01_sfnt_off000066f4.bin` `88481665a9349cf2e6ab13e84457ce7af90d8c8fe2cbf7bd6140c9545bd75a07`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66F4	11788 bytes

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