PDF malware analysis — malicious · 3fd2f4c788c905d6

MALICIOUS

PDF

42.9 KB Created: 2020-09-09 11:05:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bdc6603d5806ee1c554d545567c8d891 SHA-1: e336c3fb1ca6596ecf345c528ab284ee1a902d0f SHA-256: 3fd2f4c788c905d609a14c10c47ba961484d025f192b62e9205630c2fc9f084d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to an 'IoT platform market report'. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, suggesting a link farm or SEO abuse tactic. The ML classifier 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.me/pify?keyword=iot+platform+market+report
- https://static.usrfiles.com/ugd/4dd980_769b9479ff5b45bd974cbfc090df0212.pdf
- https://static.usrfiles.com/ugd/baef12_d310cba27664405bb9a4ea848f149b2e.pdf
- https://static.usrfiles.com/ugd/ce14f3_9f4739c4add84f44a02624ca6e671a5b.pdf
- https://static.usrfiles.com/ugd/67f5f7_eff585f6281c4b068716d925f46cf470.pdf
- https://cdn.shopify.com/s/files/1/0434/3191/9765/files/starbound_acid_rain.pdf
- https://cdn.shopify.com/s/files/1/0434/6957/0198/files/wavilakiromarowujemanu.pdf
- https://cdn.shopify.com/s/files/1/0428/6034/7551/files/26271462316.pdf
- https://cdn.shopify.com/s/files/1/0429/2077/1750/files/9978280212.pdf
- https://cdn.shopify.com/s/files/1/0438/4679/5424/files/cbse_class_12_biology_evolution_notes.pdf
- https://cdn.shopify.com/s/files/1/0440/8256/1176/files/13272941581.pdf
- https://cdn.shopify.com/s/files/1/0431/4621/5584/files/catalyst_destiny_2_guide.pdf
- https://cdn.shopify.com/s/files/1/0440/0083/7782/files/rakirasofureju.pdf
- https://cdn.shopify.com/s/files/1/0429/6844/9180/files/44861592678.pdf
- https://static.usrfiles.com/ugd/16879a_c5be78c452ba42e6a65dd58ba882a9ad.pdf
- https://static.usrfiles.com/ugd/bca722_bd655b9101f54bce8484f73e56102210.pdf
- https://static.usrfiles.com/ugd/54bec1_49d53b1d334c409ebfa1f8a23a327a70.pdf
- https://static.usrfiles.com/ugd/0d002d_282533a0b9d54e418a6dcdc55ea17b0d.pdf
- https://static.usrfiles.com/ugd/b8c837_b0a6355140284d5ea78165582bcba1ee.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_off00006a2e.bin` `119d74329199151ba692dd5d5e3cd8825ec3da0f5095d052c6577639f1e35c76`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A2E	4868 bytes
`font_01_sfnt_off00007aa9.bin` `245644c3b849e748d6072f24cc410efcdd88ec4167be865804ecd9cbb2c138e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AA9	10644 bytes

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