PDF malware analysis — malicious · 3ea90859121af149

MALICIOUS

PDF

33.9 KB Created: 2020-08-07 19:49:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c19e4727ad15bd0d6a79435965afb01c SHA-1: 3bc7da4aa047be07223448350cf9b9f4d8f54fa7 SHA-256: 3ea90859121af149eb26dfbe6acc1ff9826017cbd39ecc4dfd9eede302c05d81

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 benign Shopify URLs, but one critical link redirects to the known malicious domain ttraff.cc. This indicates a social engineering attempt to trick users into visiting a malicious site under the guise of providing guitar tab information. The ML classifier strongly supports the malicious verdict.

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=pink+floyd+coming+back+to+life+guitar+tab+pdf
- http://xigaga.nebraskaarteducators.org/uploads/1/3/0/8/130814328/e355b7.pdf
- http://files.haslettfootball.com/uploads/1/3/2/6/132681556/kabobidi-wuzubure-vukuni-rudito.pdf
- http://rivot.ridgewaybaseball.com/uploads/1/3/1/8/131856333/nopovepugavenolu.pdf
- http://files.selfexposed.co/uploads/1/3/1/3/131383548/564232.pdf
- http://files.morningrosehouston.com/uploads/1/3/2/6/132695568/8957897.pdf
- https://cdn.shopify.com/s/files/1/0435/3543/3882/files/bsc_1st_sem_chemistry_notes.pdf
- https://cdn.shopify.com/s/files/1/0427/5470/3526/files/pitch_perfect_book.pdf
- https://cdn.shopify.com/s/files/1/0436/5592/1817/files/91284549228.pdf
- https://cdn.shopify.com/s/files/1/0437/0379/5865/files/la_administracion_publica_en_la_constitucion_espaola.pdf
- https://cdn.shopify.com/s/files/1/0429/8516/0857/files/bagunebakixoz.pdf
- https://cdn.shopify.com/s/files/1/0429/6006/0567/files/90469320788.pdf
- https://cdn.shopify.com/s/files/1/0429/5432/6179/files/87679835440.pdf
- https://cdn.shopify.com/s/files/1/0431/8317/7885/files/64523705574.pdf
- https://cdn.shopify.com/s/files/1/0431/8298/1281/files/58525143520.pdf
- https://cdn.shopify.com/s/files/1/0429/6710/5687/files/sukinikuli.pdf
- https://cdn.shopify.com/s/files/1/0435/4224/9621/files/neversinks_tornado_shot.pdf
- https://cdn.shopify.com/s/files/1/0428/1312/8863/files/tekafi.pdf
- https://cdn.shopify.com/s/files/1/0430/7392/9377/files/disune.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_off00004692.bin` `f674d34633560702660ae8a308894328b9374c03fa6479f23c926f2f87e47bd4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4692	5604 bytes
`font_01_sfnt_off0000599a.bin` `d6ea2cdf0a9cb8f889fdd0b603e71e4d67206fb83fb40a408ef3ba729f8107ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x599A	9588 bytes

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