PDF malware analysis — malicious · c64ee7f35c348249

MALICIOUS

PDF

43.0 KB Created: 2020-08-10 04:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 031b9363b4f537d6d6314c0dd96cc923 SHA-1: f37241f419dc8af486fa34aa1dd66208e8c901f8 SHA-256: c64ee7f35c348249c7fdb7e1cd6be9c5e526dfe4fbe5fca2ed60de792f2bc2e2

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 that host numerous other PDFs, suggesting a link farm for SEO poisoning. 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 target URL and references to research journals, reinforcing the lure.

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=air+pollution+research+journal+pdf
- http://files.rodmellfund.org/uploads/1/3/1/4/131454521/2cc6adaea96e07.pdf
- http://files.larienca.net/uploads/1/3/1/8/131858592/5361c611e05.pdf
- http://pojidov.libertymerchandise.org/uploads/1/3/1/0/131070420/b89777caf52d764.pdf
- https://cdn.shopify.com/s/files/1/0434/5180/9959/files/1968_mercury_montery.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82505274200.pdf
- https://cdn.shopify.com/s/files/1/0432/3137/9618/files/2717849214.pdf
- https://cdn.shopify.com/s/files/1/0434/8801/8594/files/purivijofototepivomivufap.pdf
- https://cdn.shopify.com/s/files/1/0427/9877/6487/files/xolesiwemugazexane.pdf
- https://cdn.shopify.com/s/files/1/0428/7997/5590/files/sedabobifimekaka.pdf
- https://cdn.shopify.com/s/files/1/0430/9961/9492/files/cognitive_approach_to_language_learning.pdf
- https://cdn.shopify.com/s/files/1/0432/2351/5294/files/8493796748.pdf
- https://cdn.shopify.com/s/files/1/0438/0744/1053/files/pacific_fitness_home_gym.pdf
- https://cdn.shopify.com/s/files/1/0431/0076/6369/files/92921518778.pdf
- https://cdn.shopify.com/s/files/1/0429/1274/3591/files/sisolewejupusov.pdf
- https://cdn.shopify.com/s/files/1/0433/7431/3633/files/dovavapebuserodo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004ea2.bin` `c2518343a81d07b514d304baa23776f1aab600d1e7bee9bea806402d43dafd2d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EA2	5308 bytes
`font_01_sfnt_off000060ad.bin` `f6ca7b370bac7b9dbd8a60485463d0d8f5c37e3d193742008d748d972fcf611b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60AD	9772 bytes
`font_02_sfnt_off00008251.bin` `44331f8be60211e77538eb0e07e5c9a7c79d0b6b9f7b6bd2efbf848ba2abcee6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8251	17664 bytes

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