PDF malware analysis — malicious · 89a0384df3c9e53d

MALICIOUS

PDF

41.4 KB Created: 2020-09-24 00:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 01507bcdf531110049db8f2326daadf7 SHA-1: 99b573d2a663d3cbad86e63bdd0ff51b40a24db7 SHA-256: 89a0384df3c9e53dc126befce72e73bee8323a644689234121579e5ec7cff8ad

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with several pointing to known malicious redirector infrastructure and link farms. The primary heuristic indicates a malicious redirector, and the presence of numerous external PDF links suggests a link farm or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the document's structure and embedded URLs are indicative of a malicious distribution or redirection scheme.

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.com/pify?keyword=aeneid+dido+character+analysis
- http://zarekabo.yellowarrowcounseling.com/uploads/1/3/1/4/131407406/297c4bd.pdf
- http://janut.awgoldens.com/uploads/1/3/1/4/131453870/giwimebemi.pdf
- http://files.sandcastletreasures.com/uploads/1/3/2/6/132681322/334f53f0ba83.pdf
- http://files.markjmusic.com/uploads/1/3/0/7/130775396/puzebelotijalixox.pdf
- https://178351b1-e344-4555-b45d-5f3c55547557.filesusr.com/ugd/26481d_87562ebc44014e4dae5e8603a58b24c5.pdf?index=true
- https://244d3d81-ac2b-48c0-bd6b-fb732b34ac12.filesusr.com/ugd/1f6d71_d2816a0f01274ab1a6e0fa78335ff90f.pdf?index=true
- https://f8ddd7a6-6692-4a57-9b77-dcf6c846c026.filesusr.com/ugd/2486b5_c9701a735ac84c0eb1e585f3f3513b2d.pdf?index=true
- https://caa61e8f-15f5-4636-b188-96d977cc9e2f.filesusr.com/ugd/db93e9_ce2efb359c574d57844ca89dff9ab82c.pdf?index=true
- https://347b4edf-b233-4119-ab6b-30edd4b3d190.filesusr.com/ugd/f9fac6_4a63e6cb8f2246d28c504632cb928e99.pdf?index=true
- https://a8a1d16f-929e-4f19-8430-3cb682cbaed0.filesusr.com/ugd/35f767_b1bc76e20b764a7ba5e46ab77d83fc33.pdf?index=true
- https://b1e9b1c5-c0ff-434b-af0b-86fbe5edfde7.filesusr.com/ugd/3f0e57_817fd19139c741ba9359b439e51ff0d6.pdf?index=true
- https://a981638d-2b99-4a99-b28e-0a8107770c55.filesusr.com/ugd/d3758e_7baf9636b3b6442da1fda17fe6f70561.pdf?index=true
- 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_off000065d7.bin` `89a68c01ff80937c7829192810f8236bfa934a58ba9103204c97e97179f27173`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65D7	5120 bytes
`font_01_sfnt_off0000773e.bin` `1f34fb365698ed4365525a5511a81aa16fbe9c8c6075faabb6131174e4414783`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x773E	9932 bytes

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