PDF malware analysis — malicious · a4f51a4973bbed86

MALICIOUS

PDF

36.5 KB Created: 2020-08-30 20:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c1b33c00992a1888ef3d6b15a18b1a33 SHA-1: e1cb8e196acaa9f12c53c70a20153bc9ca7f3fcb SHA-256: a4f51a4973bbed8630587af6f3df537f8af09f6774f1c1246ac0a8d7eec12ad8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=wltoys+12428+upgrade+parts'. This URL is likely used to redirect the user to a malicious site. The document body, though partially corrupted, contains text related to 'wltoys 12428 upgrade parts' and the malicious URL, suggesting a lure to entice clicks. The presence of numerous external PDF links further supports a link farm or redirection tactic.

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.cc/wix?keyword=wltoys+12428+upgrade+parts
- https://cdn.shopify.com/s/files/1/0440/8115/2152/files/80473666503.pdf
- https://cdn.shopify.com/s/files/1/0437/7785/1553/files/converse_of_conditional_statement.pdf
- https://cdn.shopify.com/s/files/1/0429/9443/4202/files/93307783661.pdf
- https://cdn.shopify.com/s/files/1/0437/9649/6544/files/esp32_datasheet_pinout.pdf
- https://static.usrfiles.com/ugd/0b46e6_2cc1193a33b145fda7dfd8622ce81123.pdf
- https://static.usrfiles.com/ugd/77d535_f0f75c85f0a24591a694263b855ce49b.pdf
- https://static.usrfiles.com/ugd/b8c837_c025fea803ee47b899c09f4d3182c358.pdf
- https://static.usrfiles.com/ugd/34e21e_a69632175b7046acac3df45feb6d22e5.pdf
- https://static.usrfiles.com/ugd/b8c837_d5dc56fb56bc44e4addb632d64f5d847.pdf
- https://static.usrfiles.com/ugd/63d3ad_8590552ee9ec4ea288f08634253c4532.pdf
- https://static.usrfiles.com/ugd/b8c837_f6dc46405b074502859cef609ce0d915.pdf
- https://static.usrfiles.com/ugd/0c8cc8_142341d985334603a3ab9c6882409bd7.pdf
- https://static.usrfiles.com/ugd/b8c837_d424ac2844b1474390a801dd8b290f2a.pdf
- https://static.usrfiles.com/ugd/32acb1_fe53de62429844f2a860712ac2b21603.pdf
- https://static.usrfiles.com/ugd/b8c837_2add61c2764c44468a3083442cb4b740.pdf
- https://static.usrfiles.com/ugd/b8c837_03c4e1483542468bb670d192ab0e152f.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_off00004a4a.bin` `8da539ca77f44869fbaecb67fe82dc965713b515e1f53812bfcbe490a6b88739`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A4A	5708 bytes
`font_01_sfnt_off00005ddf.bin` `61dd9833cef8522d5aeadfa4bd0b1e6607d430bb3f4ba6388ae037e46233b625`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DDF	12392 bytes

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