PDF malware analysis — malicious · 1bbbfeecfce71341

MALICIOUS

PDF

45.7 KB Created: 2020-08-08 08:19:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a7df36074f01a6ec4af71992cac4937c SHA-1: 11474f9daa5b64d98d23e446d38cbd0d068808f6 SHA-256: 1bbbfeecfce7134142c4f0bf1fddc894837fdc60be83dc5740df815830dcd2a9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high density of external links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing its role as a lure. No scripts were extracted from this sample.

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=distress+tolerance+worksheets+pdf
- http://files.discoelectroson.com/uploads/1/3/1/1/131164431/nevemiwedisirujuber.pdf
- http://files.transformingliveschurch.org/uploads/1/3/1/6/131637889/8544369.pdf
- http://files.erikphoel.com/uploads/1/3/0/8/130873794/8722348.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34597476450.pdf
- https://cdn.shopify.com/s/files/1/0430/5348/2135/files/90138235607.pdf
- https://cdn.shopify.com/s/files/1/0431/1026/9082/files/29467870178.pdf
- https://cdn.shopify.com/s/files/1/0433/1149/7366/files/swagger_souls_face.pdf
- https://cdn.shopify.com/s/files/1/0437/0333/7115/files/43506442380.pdf
- https://cdn.shopify.com/s/files/1/0437/5419/3047/files/battlefield_of_the_mind.pdf
- https://cdn.shopify.com/s/files/1/0430/9693/2501/files/large_intestine_anatomy.pdf
- https://cdn.shopify.com/s/files/1/0430/6799/8362/files/runumijexebetidadirib.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdf
- https://cdn.shopify.com/s/files/1/0431/4244/7265/files/moguzutilaberarixokif.pdf
- https://cdn.shopify.com/s/files/1/0433/5848/6678/files/bis_warrior_classic.pdf
- https://cdn.shopify.com/s/files/1/0430/7789/4293/files/zutolomiwevirexidufa.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdf
- https://cdn.shopify.com/s/files/1/0430/5502/2234/files/92593336889.pdf
- https://cdn.shopify.com/s/files/1/0431/2023/0564/files/81288752589.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_off00007572.bin` `ad107b640f6aec61829ceea9e519d3db2ae6c81faf0bf661266fcaed08aa9ce4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7572	5396 bytes
`font_01_sfnt_off000087e2.bin` `b150e4c999eed64cc051e70b5f3ac0631b2344d0ee3c21a659886e0b3de0d221`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87E2	9872 bytes

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