PDF malware analysis — malicious · e20732a9bf03d041

MALICIOUS

PDF

46.6 KB Created: 2020-08-13 15:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b561914d82843d72f0d0db85c1b5c09d SHA-1: 7360d8f42e9f7141ac44f090612f301c2ec9ede9 SHA-256: e20732a9bf03d04133b2482ee4288dd6bb3a099b4587a7dd439a1b5ea203ce4a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=arkitektura+e+kompjuterit+pdf'. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to 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.ru/pify?keyword=arkitektura+e+kompjuterit+pdf
- http://padeda.zenobunny.com/uploads/1/3/1/6/131607505/1431cbbe49.pdf
- http://files.bluwooddesignandbuild.co.uk/uploads/1/3/1/1/131163788/rezavuviwa.pdf
- http://files.orionavevannuys.com/uploads/1/3/2/6/132681281/55c0d5ea03634ba.pdf
- https://cdn.shopify.com/s/files/1/0440/2728/1558/files/apparel_industry.pdf
- https://cdn.shopify.com/s/files/1/0427/8494/8380/files/jilulilalesapevo.pdf
- https://cdn.shopify.com/s/files/1/0436/4717/2768/files/vivejelarozojufobifaguga.pdf
- https://cdn.shopify.com/s/files/1/0434/4214/3388/files/79688337055.pdf
- https://cdn.shopify.com/s/files/1/0428/2122/2567/files/functional_training_for_sports_boyle.pdf
- https://cdn.shopify.com/s/files/1/0430/8362/8697/files/medar.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fisebupujavilugux.pdf
- https://cdn.shopify.com/s/files/1/0436/1850/0765/files/51026318899.pdf
- https://cdn.shopify.com/s/files/1/0439/1898/3323/files/broke_nigga_alert.pdf
- https://cdn.shopify.com/s/files/1/0433/1218/5502/files/pepowupegewofezap.pdf
- https://cdn.shopify.com/s/files/1/0434/9699/7030/files/diagnostic_service_host.pdf
- https://cdn.shopify.com/s/files/1/0430/9060/8285/files/ark_best_thatch_dino.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_off000069a8.bin` `4af9eb36d34af47b03d2d0da8aefd6b2ce369cb2c7dad23812649eb450dfbb70`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69A8	4884 bytes
`font_01_sfnt_off00007a4d.bin` `66569ab44fd36345a61113a27582115d9d87b94a77bbafdfecbe4770b5bdfc84`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A4D	10508 bytes
`font_02_sfnt_off00009d88.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D88	4324 bytes

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