PDF malware analysis — malicious · d717f7fbdb64b006

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 06:03:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 03eb9b657ae2ce934f3fdc0efc354a09 SHA-1: b832e5037b4d9fed840d06b702f2bd4003eabc87 SHA-256: d717f7fbdb64b006c5390abe2b4443527926f6f28b50af5b7ae46faf88448b8c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=oracle+sql+tutorial+pdf+free+download'. This URL is presented within the document body, disguised as a free download for an Oracle SQL tutorial, indicating a phishing or social engineering attempt. The PDF also exhibits a link farm heuristic, with numerous external links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier strongly supports the malicious verdict.

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=oracle+sql+tutorial+pdf+free+download
- http://files.ethridgedesignstudio.com/uploads/1/3/1/6/131606901/7301492.pdf
- http://files.mykeenhr.com/uploads/1/3/1/3/131383325/mobokidevugi.pdf
- http://files.washingtonhighclass62.com/uploads/1/3/1/0/131069869/7710695.pdf
- http://files.unifor2002d101.com/uploads/1/3/1/4/131453294/vesikipuv_wegafowe_rovew.pdf
- https://cdn.shopify.com/s/files/1/0429/3489/4755/files/37476673528.pdf
- https://cdn.shopify.com/s/files/1/0427/8986/3580/files/xezixeze.pdf
- https://cdn.shopify.com/s/files/1/0429/5471/9395/files/simple_balance_sheet_example.pdf
- https://cdn.shopify.com/s/files/1/0429/8201/5135/files/xokodolejitosu.pdf
- https://cdn.shopify.com/s/files/1/0431/2514/5760/files/13127260448.pdf
- https://cdn.shopify.com/s/files/1/0441/2515/9576/files/manemadawasi.pdf
- https://cdn.shopify.com/s/files/1/0431/8396/4317/files/24581609846.pdf
- https://cdn.shopify.com/s/files/1/0433/5144/1560/files/13050365660.pdf
- https://cdn.shopify.com/s/files/1/0440/4844/9701/files/92758480648.pdf
- https://cdn.shopify.com/s/files/1/0430/4060/4313/files/52971525004.pdf
- https://cdn.shopify.com/s/files/1/0429/9299/2410/files/kodaxezaka.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_off00005f90.bin` `98c07f87aca75503b29a9db2baf46e51d420818f7cbba3ee896e91b58532e325`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F90	5396 bytes
`font_01_sfnt_off00007203.bin` `06b8891a76c644eab3fc0323157c45b91c9ee874736bd491659b82bdde587b95`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7203	10192 bytes

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