PDF malware analysis — malicious · b7aee047d97fc1e8

MALICIOUS

PDF

43.7 KB Created: 2020-07-30 14:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a67acaaec52e958b115eb5c07f5d9750 SHA-1: b9a271beaf75835eb823559130bfc15f82f494aa SHA-256: b7aee047d97fc1e8c90882dae38782e24b047e4d5b83a72d2bdd019bca80f3c9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=benzopireno+cancer+pdf'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0432/2187/6900/files/xidum.pdf' being the first identified. The ML classifier also strongly flagged this PDF as malicious. These indicators suggest the document's primary purpose is to redirect users to potentially harmful content.

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/pify?keyword=benzopireno+cancer+pdf
- http://files.amritaartstudio.com/uploads/1/3/1/8/131856205/1518018.pdf
- http://files.paigedevelops.com/uploads/1/3/1/6/131637362/876f11e.pdf
- http://files.wendyjfox.com/uploads/1/3/1/0/131069879/datuvepujima.pdf
- http://files.spiritofthefiddle.ca/uploads/1/3/1/4/131438113/b0dc5f72408bc2.pdf
- https://cdn.shopify.com/s/files/1/0432/2187/6900/files/xidum.pdf
- https://cdn.shopify.com/s/files/1/0440/2541/3782/files/3371993076.pdf
- https://cdn.shopify.com/s/files/1/0435/4703/3752/files/pizotunagimu.pdf
- https://cdn.shopify.com/s/files/1/0428/5018/9478/files/14863831997.pdf
- https://cdn.shopify.com/s/files/1/0430/7235/6509/files/45529938978.pdf
- https://cdn.shopify.com/s/files/1/0432/2567/7992/files/19877014292.pdf
- https://cdn.shopify.com/s/files/1/0431/8085/1364/files/95989014248.pdf
- https://cdn.shopify.com/s/files/1/0432/7977/7952/files/41783585152.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xanixiki.pdf
- https://cdn.shopify.com/s/files/1/0427/6197/8023/files/79819581881.pdf
- https://cdn.shopify.com/s/files/1/0439/2937/0779/files/43973658444.pdf
- https://cdn.shopify.com/s/files/1/0429/7100/5082/files/fopudejokivilapakox.pdf
- https://cdn.shopify.com/s/files/1/0433/7205/2643/files/92320722815.pdf
- https://cdn.shopify.com/s/files/1/0433/5311/2735/files/nalifimaxitemalalop.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/1/0430/7235/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006fbe.bin` `ed44c59c29a0101c9166d33476fb5c5cf2dba9c76f39843aef106bc0a4a34247`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FBE	4748 bytes
`font_01_sfnt_off00007fdd.bin` `6c4d8da4464f74eb0635e61b5bc7211b19d93663e1180a0bc80fa719db770219`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FDD	9892 bytes

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