PDF malware analysis — malicious · 932da18c75427b8e

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 08:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a6dd305d25bbdeaa005100edb8a5fd38 SHA-1: 0aefce488ec859c18bc8eb9cb2fb50bdc79d9e96 SHA-256: 932da18c75427b8e108fa91c692b0800faa71d174d2bb97cae27a54e7285fca8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent link that redirects to a malicious URL, disguised as a free book download. This is further supported by heuristics indicating a malicious redirector and a link farm designed for SEO manipulation. The ML classifier also flagged this PDF with high confidence. The document body contains garbled text but includes the malicious URL.

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.com/pify?keyword=computer+organization+and+assembly+language+book+pdf+free+download
- http://files.michharry.org/uploads/1/3/1/3/131398279/fa7b4fa8c8374.pdf
- http://files.janetashley.net/uploads/1/3/0/8/130874510/vadulator-badidugamixevi-tejulesimad-xudek.pdf
- http://files.dimedragons.com/uploads/1/3/0/9/130969904/b41cbe7e.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34597476450.pdf
- https://cdn.shopify.com/s/files/1/0429/9682/6273/files/cartagena_protocol_on_biosafety.pdf
- https://cdn.shopify.com/s/files/1/0432/6971/8182/files/fazavin.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdf
- https://cdn.shopify.com/s/files/1/0430/8379/2545/files/wazibenube.pdf
- https://cdn.shopify.com/s/files/1/0428/3059/4204/files/85776352088.pdf
- https://cdn.shopify.com/s/files/1/0430/0183/9775/files/rojorapo.pdf
- https://cdn.shopify.com/s/files/1/0439/4899/8811/files/how_to_mod_skyrim_ps3_without_pc.pdf
- https://cdn.shopify.com/s/files/1/0429/3056/9382/files/96488239829.pdf
- https://cdn.shopify.com/s/files/1/0430/9227/9445/files/kezunu.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jamitaribigonekadori.pdf
- https://cdn.shopify.com/s/files/1/0434/4286/4289/files/automata_tutorial_point.pdf
- https://cdn.shopify.com/s/files/1/0440/1725/4565/files/everything_i_never_told_you.pdf
- https://cdn.shopify.com/s/files/1/0431/8976/4245/files/40055565502.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/
- https://cdn.shopify.com/s/files/1/0440/1725/4565/files/everything_i_never_to

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000662a.bin` `97693c20c974a07044c88109fb97701552712a84dad23de3d0b16bc801f5d360`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x662A	5712 bytes
`font_01_sfnt_off0000799a.bin` `cac97851f21dae366da6cfa40e8ddb69b6dad2b29b0897987aa5f0d11d338768`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x799A	10212 bytes

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