PDF malware analysis — malicious · 814a14b36547b4e2

MALICIOUS

PDF

42.1 KB Created: 2020-08-10 23:23:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a212ad9afb05ea3008eebcb9b6e798aa SHA-1: 4c9eea8b379d8f4ca1d8c5e6ca327a00e9fbc1dd SHA-256: 814a14b36547b4e2eaf1eb150f820a53ae3a3b1b06c373a594ad1fd0d45dfa63

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, such as ttraff.com. The document body, though heavily obfuscated, contains references to the target URL, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to potentially harmful content through a link farm.

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=health+optimizing+physical+education+pdf
- http://files.shoplockettlashes.com/uploads/1/3/1/4/131437926/zopumebekibozix.pdf
- http://files.sirwaffle.com/uploads/1/3/0/9/130969826/degor.pdf
- http://files.dorxiesbrowsandlashes.com/uploads/1/3/0/7/130775092/diloroxirome_kikorupokofuxi.pdf
- http://files.marcyearthscience.com/uploads/1/3/0/7/130739004/484846d58ada9.pdf
- http://zidewovi.haleykatharine.com/uploads/1/3/0/7/130739678/vuzid.pdf
- https://cdn.shopify.com/s/files/1/0430/7753/3856/files/rugadujuxi.pdf
- https://cdn.shopify.com/s/files/1/0434/0819/5738/files/94394875848.pdf
- https://cdn.shopify.com/s/files/1/0436/4192/9886/files/58354385231.pdf
- https://cdn.shopify.com/s/files/1/0432/6280/4136/files/lujaxax.pdf
- https://cdn.shopify.com/s/files/1/0434/7029/1096/files/95288402798.pdf
- https://cdn.shopify.com/s/files/1/0437/5530/7159/files/barenikavegoza.pdf
- https://cdn.shopify.com/s/files/1/0429/4826/4089/files/nepovijevifexewabevuzep.pdf
- https://cdn.shopify.com/s/files/1/0430/3391/9645/files/dubalofuduromizevigone.pdf
- https://cdn.shopify.com/s/files/1/0433/8126/0440/files/89058565131.pdf
- https://cdn.shopify.com/s/files/1/0433/8306/2678/files/raxoginewuvenewaj.pdf
- https://cdn.shopify.com/s/files/1/0431/7587/0613/files/wojimurolurikoso.pdf
- https://cdn.shopify.com/s/files/1/0427/9471/3244/files/sawogeteserixugunupib.pdf
- https://cdn.shopify.com/s/files/1/0432/6991/4782/files/converting_binary_numbers.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_off000065db.bin` `28ee994ad6f25a0bb69770689d9e1c5ef1aa2b33c04d787b03b9042eab0a5a27`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65DB	5588 bytes
`font_01_sfnt_off000078cd.bin` `a557e53b89ceebdbe4a761796af47eabaccf40c4d76742215311fcc53a79b6c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78CD	10120 bytes

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