PDF malware analysis — malicious · 214d304c5050cc24

MALICIOUS

PDF

47.4 KB Created: 2020-07-30 10:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a67dbaf90993fc54330859af9f2934bc SHA-1: 3bbcfad1b54c47b64c3f0b8f7a5733dc570417f6 SHA-256: 214d304c5050cc24a76dfb2cba5b2a50182da50f2f543c8dffc1da618d3b238a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector URL, which is a common tactic for delivering malicious payloads or phishing pages. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this. Additionally, the PDF is flagged as a link farm, suggesting it's designed to artificially boost search engine rankings for malicious content. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, contains keywords related to the embedded 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.cc/wb?keyword=monopoly%20and%20imperfect%20competition%20pdf
- http://files.bluehorizonswellness.com/uploads/1/3/0/7/130738681/1827073.pdf
- http://files.speakoutproject.org/uploads/1/3/1/3/131381288/pexojuwaxudurarobij.pdf
- http://files.cwoodtheatre.com/uploads/1/3/1/3/131381369/1115538.pdf
- http://files.vintagewoodworkingtools.net/uploads/1/3/0/7/130739204/8115170.pdf
- http://files.vintagewoodworkingtools.net/uploads/1/3/0/
- https://cdn.shopify.com/s/files/1/0430/7936/8858/files/zibazatinobaxo.pdf
- https://cdn.shopify.com/s/files/1/0438/3873/4496/files/pamarorudidup.pdf
- https://cdn.shopify.com/s/files/1/0433/3967/7861/files/mogusasak.pdf
- https://cdn.shopify.com/s/files/1/0428/3075/8054/files/zujuxodurumepix.pdf
- https://cdn.shopify.com/s/files/1/0436/7423/9129/files/duwevizakojifi.pdf
- https://cdn.shopify.com/s/files/1/0435/1095/6196/files/54957109465.pdf
- https://cdn.shopify.com/s/files/1/0430/3863/8241/files/tavadexilabove.pdf
- https://cdn.shopify.com/s/files/1/0428/6975/1967/files/43013260269.pdf
- https://cdn.shopify.com/s/files/1/0432/1663/4016/files/42673168348.pdf
- https://cdn.shopify.com/s/files/1/0432/5061/4429/files/77839628716.pdf
- https://cdn.shopify.com/s/files/1/0433/7513/2821/files/11323324550.pdf
- https://cdn.shopify.com/s/files/1/0437/3364/7525/files/pometajig.pdf
- https://cdn.shopify.com/s/files/1/0431/8180/1629/files/pajobepaso.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_off00007c96.bin` `ae15af6962f94ac565d0ee18e727afc3ab07d54bcbdfb6f370a1ce9b7717fb6b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C96	5016 bytes
`font_01_sfnt_off00008d97.bin` `dd38e7f5914a5de6a4c6c1376cba4aa3a4a35ffdc8a49d1e38dedaf73707189d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D97	10124 bytes

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