PDF malware analysis — malicious · 26db329095bce89c

MALICIOUS

PDF

41.3 KB Created: 2020-08-10 09:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9f4bef153d15562e33908c276f3159fd SHA-1: 04e6a4ea1883728489248e8ef9d691b69b6cd7b0 SHA-256: 26db329095bce89cc9d258f83fbbe26949df291c1abe3c4585dbcb27277fa070

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, indicating a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.ru/pify?keyword=ceramic+sculpture+making+faces+pdf, which is likely used to redirect users to a malicious site. The document body contains garbled text but also repeats the malicious URL and several benign-looking Shopify URLs, suggesting an attempt to disguise the malicious intent.

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=ceramic+sculpture+making+faces+pdf
- http://files.westerncanineacademy.ca/uploads/1/3/1/3/131383664/lobop.pdf
- http://files.harveyaraton.com/uploads/1/3/1/4/131437418/8136036.pdf
- http://files.molivery.ee/uploads/1/3/0/9/130969446/wujusikoze_sasotuno_zenafuvufol_fivaduv.pdf
- https://cdn.shopify.com/s/files/1/0433/2358/8773/files/tewadosere.pdf
- https://cdn.shopify.com/s/files/1/0434/1478/2104/files/60421074694.pdf
- https://cdn.shopify.com/s/files/1/0429/9682/6261/files/32498162190.pdf
- https://cdn.shopify.com/s/files/1/0430/9378/6791/files/tigogedejunewobajasu.pdf
- https://cdn.shopify.com/s/files/1/0436/3865/3086/files/naca_airfoil.pdf
- https://cdn.shopify.com/s/files/1/0430/0803/2922/files/79304847916.pdf
- https://cdn.shopify.com/s/files/1/0427/8406/3654/files/45938478517.pdf
- https://cdn.shopify.com/s/files/1/0433/8706/0378/files/travel_agency_brochure_sample.pdf
- https://cdn.shopify.com/s/files/1/0429/5573/5199/files/hot_stylez_lookin_boy.pdf
- https://cdn.shopify.com/s/files/1/0428/8475/9711/files/jimejukizubunubi.pdf
- https://cdn.shopify.com/s/files/1/0431/3654/9018/files/jedijatezekesulomopalo.pdf
- https://cdn.shopify.com/s/files/1/0429/9502/4033/files/nijatugepegikaxapamas.pdf
- https://cdn.shopify.com/s/files/1/0431/7983/5547/files/98488665607.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_off000062d6.bin` `c455e1e60ae33002d933eae95f746c51eaef613767ce333b619e57b1caf288b5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62D6	5444 bytes
`font_01_sfnt_off00007542.bin` `f889d41074331ed7c3cc60301400fb8840d6b15c4b5bee1ee8e4d457e4e7b68c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7542	10188 bytes

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