PDF malware analysis — malicious · 7e5bc9e16b9882b4

MALICIOUS

PDF

50.0 KB Created: 2020-08-08 23:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a5bc943c07871c988d4dc9c9cd34253a SHA-1: bc6b5605409631f6441cc0f372a4d5a83fd3ec3e SHA-256: 7e5bc9e16b9882b4c6ef86df89cb67e8e60f845ce7cf37d2457b4c55ee08f195

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=b+oxidation+of+fatty+acids+pdf, is likely used to direct the user to a harmful destination. The presence of numerous other links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to obscure the malicious intent. The ML classifier strongly flagged this PDF as malicious.

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=b+oxidation+of+fatty+acids+pdf
- http://pobefan.scbamo.com/uploads/1/3/1/3/131398091/c3a58d7.pdf
- http://fabaw.bigdogrottweilers.com/uploads/1/3/0/7/130776407/3921488.pdf
- http://files.stevenmmillerphotography.com/uploads/1/3/1/3/131398447/pojoven-dobagawexolufab-mizur.pdf
- http://files.nextlevpro.org/uploads/1/3/0/9/130969772/garoz.pdf
- https://cdn.shopify.com/s/files/1/0434/3971/8552/files/lezomizixezute.pdf
- https://cdn.shopify.com/s/files/1/0429/2355/7030/files/zunuzurebewidud.pdf
- https://cdn.shopify.com/s/files/1/0432/8869/0844/files/gugojawewavalurowit.pdf
- https://cdn.shopify.com/s/files/1/0438/0937/4365/files/4711819147.pdf
- https://cdn.shopify.com/s/files/1/0438/6881/5528/files/sports_cars_under_10k.pdf
- https://cdn.shopify.com/s/files/1/0431/8933/8276/files/29004470998.pdf
- https://cdn.shopify.com/s/files/1/0430/4296/3613/files/44726521853.pdf
- https://cdn.shopify.com/s/files/1/0428/5143/4652/files/xemadipuxamo.pdf
- https://cdn.shopify.com/s/files/1/0430/3847/4397/files/gujelobaxobazim.pdf
- https://cdn.shopify.com/s/files/1/0430/7235/6509/files/janexovipokupadi.pdf
- https://cdn.shopify.com/s/files/1/0429/5750/4668/files/virefegiradivavow.pdf
- https://cdn.shopify.com/s/files/1/0431/6784/2465/files/16279216555.pdf
- https://cdn.shopify.com/s/files/1/0434/4227/4454/files/car_salesman_resume.pdf
- https://cdn.shopify.com/s/files/1/0428/9832/5663/files/xewezegix.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_off000085a6.bin` `d65af6ffe77b075141e69e3e4a08c86f20dc18a8727e21a4bbbc8793027de08b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85A6	5240 bytes
`font_01_sfnt_off000097a9.bin` `e52aec658e0d145824f7929f4b8582c9e6d5b1b7ddbe842f5de77bfb00e98dcf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97A9	10340 bytes

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