PDF malware analysis — malicious · feaed15b712d50a0

MALICIOUS

PDF

41.4 KB Created: 2020-08-18 16:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bd98bb45819165215420fcc878f0bd5c SHA-1: 278c4ceec32fd1ac24c2c787f28098fd2b7854a6 SHA-256: feaed15b712d50a0f92cbacfa1cc405a9aaad891f9e60efc30bdcf30a1760a3f

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 link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://ttraff.ru/pify?keyword=setting+out+circular+curve+report, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on Shopify, suggesting a broad distribution attempt.

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=setting+out+circular+curve+report
- http://files.texbard.com/uploads/1/3/2/6/132695472/xibevof-zoguvogotoluba.pdf
- http://files.harrietslaughter.net/uploads/1/3/0/7/130776111/veritebu_pewifakogaz_puvumifovajem_lisefimerub.pdf
- http://wunid.teachsciencealabama.com/uploads/1/3/0/9/130969060/3220930.pdf
- https://cdn.shopify.com/s/files/1/0434/5780/6486/files/48152052392.pdf
- https://cdn.shopify.com/s/files/1/0429/3967/8886/files/46330133135.pdf
- https://cdn.shopify.com/s/files/1/0432/2741/4696/files/discuss_the_characteristics_of_culture.pdf
- https://cdn.shopify.com/s/files/1/0430/3493/5447/files/95255078361.pdf
- https://cdn.shopify.com/s/files/1/0438/0046/1474/files/damononitagategatix.pdf
- https://cdn.shopify.com/s/files/1/0433/5452/1758/files/92015324208.pdf
- https://cdn.shopify.com/s/files/1/0440/6778/2821/files/nutricion_parenteral_pediatria.pdf
- https://cdn.shopify.com/s/files/1/0434/3998/0710/files/landscape_photography_magazine_free_download.pdf
- https://cdn.shopify.com/s/files/1/0428/3518/1724/files/31858054820.pdf
- https://cdn.shopify.com/s/files/1/0436/3298/4222/files/15681600719.pdf
- https://cdn.shopify.com/s/files/1/0434/7019/2805/files/tamanojonezininegako.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_off0000509b.bin` `9597e2b179d04a4f87b751d0aa43d3227c020bae70e1ae1d849cfe9e4f8ef520`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x509B	5084 bytes
`font_01_sfnt_off00006200.bin` `598fc67eefdbc51124353886670c4774541aabe88d5df04b4984c473a3091a4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6200	9856 bytes
`font_02_sfnt_off000083e4.bin` `4ce97752c8d1ed0b0302a1507788019c6b738cc3ee96ca273f61f92c287db7cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83E4	16072 bytes

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