PDF malware analysis — malicious · 220331648bce7fca

MALICIOUS

PDF

46.1 KB Created: 2020-08-09 11:11:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 979f645180d392c4cc8907582592ecba SHA-1: 038f19b0a1218fcc374219b81650aed61c27a41f SHA-256: 220331648bce7fca313081f2807f1c7511e018e6d7b176734748040190a51b6d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that is also flagged as a malicious redirector. This suggests the primary purpose is to redirect users to potentially harmful sites.

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=biografia+de+patrice+lumumba+pdf
- http://jubiwow.cdrayofhope.com/uploads/1/3/1/0/131070420/62eee.pdf
- http://files.jennderango.com/uploads/1/3/1/4/131407802/nirofu-newepatosafo-jatabuwof-zibak.pdf
- http://files.michiganhydrographics.com/uploads/1/3/2/6/132682039/nimafeke.pdf
- http://files.thepeacefulhealingtree.com/uploads/1/3/1/8/131856052/4ce7c45fa13.pdf
- http://files.ramblinghomestead.com/uploads/1/3/0/8/130874496/bc1666.pdf
- https://cdn.shopify.com/s/files/1/0434/0134/7226/files/oracion_arcangel_san_miguel.pdf
- https://cdn.shopify.com/s/files/1/0430/2418/7549/files/30904108446.pdf
- https://cdn.shopify.com/s/files/1/0431/5663/5805/files/6926463600.pdf
- https://cdn.shopify.com/s/files/1/0436/5592/1817/files/rubosawukofojuvivad.pdf
- https://cdn.shopify.com/s/files/1/0431/0846/6845/files/84131564619.pdf
- https://cdn.shopify.com/s/files/1/0428/7492/9319/files/gafetebetapokitonu.pdf
- https://cdn.shopify.com/s/files/1/0428/7306/1532/files/fujixuvixifozel.pdf
- https://cdn.shopify.com/s/files/1/0433/4993/4229/files/97492068352.pdf
- https://cdn.shopify.com/s/files/1/0429/1035/1513/files/fexudaxupojoma.pdf
- https://cdn.shopify.com/s/files/1/0430/4211/1650/files/pesineguvunaxoku.pdf
- https://cdn.shopify.com/s/files/1/0430/5872/5018/files/10059332754.pdf
- https://cdn.shopify.com/s/files/1/0432/5661/0969/files/clipping_algorithm_in_computer_graphics.pdf
- https://cdn.shopify.com/s/files/1/0431/9716/9824/files/60916242351.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_off000075d1.bin` `12eed40d1cf46fe4000808eb625d75a44ef80fc14126d8e97d256a7fd5c16775`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75D1	5488 bytes
`font_01_sfnt_off00008866.bin` `e397a4e578b3d2a28a7906a639c2eede4ec914edae191a23686f1ac6cb0d927b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8866	10272 bytes

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