PDF malware analysis — malicious · 56f6613ccab2bf7b

MALICIOUS

PDF

90.3 KB Created: 2020-09-01 03:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ae97c5387359945011814771def17d8d SHA-1: 4f9471a22fff8e5810cbf8fe51298569090097c0 SHA-256: 56f6613ccab2bf7b7cf40b15f37ed3da779c908e20d6f0a8d3890df7799391b8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/wix?keyword=bolzano+map+pdf', suggesting a lure to a malicious site. The presence of numerous PDF links, many pointing to static.usrfiles.com, indicates a link farm strategy, likely to improve search engine ranking for malicious content or to obscure the final destination. The ML classifier also strongly flagged this PDF as malicious.

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.link/wix?keyword=bolzano+map+pdf
- https://static.usrfiles.com/ugd/eed56f_86747762dc594d96ad0226ba68be3e06.pdf
- https://static.usrfiles.com/ugd/4117a9_a551c1c79c24465fa50f7bfcf39148d3.pdf
- https://static.usrfiles.com/ugd/15cd4d_58f8be53082a4176a85147e4b8f4d94d.pdf
- https://static.usrfiles.com/ugd/6cf392_52cc7e24537e449e951726ddada164ad.pdf
- https://cdn.shopify.com/s/files/1/0461/9485/1993/files/tanuvet.pdf
- https://cdn.shopify.com/s/files/1/0434/6504/8214/files/tuzavazafamezuvuxavew.pdf
- https://cdn.shopify.com/s/files/1/0432/5035/2296/files/ruwawe.pdf
- https://cdn.shopify.com/s/files/1/0434/5397/2633/files/nozix.pdf
- https://static.usrfiles.com/ugd/b8c837_9317eb29db70495d88f1b505263542c1.pdf
- https://static.usrfiles.com/ugd/a382ee_50c49f523bf745789e15147763315bfd.pdf
- https://static.usrfiles.com/ugd/1849a1_9bd2ff5700544351aff568fdea07b9b5.pdf
- https://static.usrfiles.com/ugd/b4609a_43ae40bf82d04be489eff63923f4b2cb.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_off00010c27.bin` `8de61fc316805138a03a2ee91b58248393197afb88e5275c1b237560e8a31e1e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10C27	4556 bytes
`font_01_sfnt_off00011b80.bin` `c61eb8e2d2b05c36b1ad28ea13642d7b848cbddf85c5e64e470198635740c627`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B80	16632 bytes
`font_02_sfnt_off00014ea5.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14EA5	4324 bytes

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