PDF malware analysis — malicious · a3afb3f8548489ac

MALICIOUS

PDF

46.9 KB Created: 2020-09-04 06:31:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3d1df67473c1d280c884fbb3707361de SHA-1: 992b8a6eba8a48343af49e48032caa4d0ee7af51 SHA-256: a3afb3f8548489ac7ce5ac853a3d0a6509f56c37e91977abb2193d610e6de1da

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=dvla+guidelines+obstructive+sleep+apnoea'. This indicates a phishing attempt disguised as official information. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a large number of external links, many pointing to 'static.usrfiles.com', suggests a link farm used to obscure the final malicious destination.

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/wix?keyword=dvla+guidelines+obstructive+sleep+apnoea
- https://static.usrfiles.com/ugd/a298ce_91156f58dd2a491da204e145011fbcad.pdf
- https://static.usrfiles.com/ugd/3d0627_50e1c65bcbf24f9fbeb6c75b17de4ffc.pdf
- https://static.usrfiles.com/ugd/de60da_fa50de2e939d434f8353370625c6c102.pdf
- https://static.usrfiles.com/ugd/87fdc7_39b9348fb4844ac3a8efb4ebb9d165ec.pdf
- https://static.usrfiles.com/ugd/7921d2_6c1385a6cff244178e34cd4a5aa62f51.pdf
- https://static.usrfiles.com/ugd/83b1b3_0feade28782a4db99cdea3debe0a8d49.pdf
- https://static.usrfiles.com/ugd/64e449_4439ce184dc1440e8d391111a6d62130.pdf
- https://static.usrfiles.com/ugd/cc207a_3cce232904384225abe2f6ca35dffbb8.pdf
- https://cdn.shopify.com/s/files/1/0438/1710/7616/files/47237064238.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
- https://cdn.shopify.com/s/files/1/0438/6629/2389/files/pagimasexak.pdf
- https://cdn.shopify.com/s/files/1/0436/3337/7440/files/81428207007.pdf
- https://cdn.shopify.com/s/files/1/0431/2724/2906/files/kusaregax.pdf
- https://static.usrfiles.com/ugd/82e28d_6c258a416c6246c9ab3aea2d65340f87.pdf
- https://static.usrfiles.com/ugd/2f7489_64e92463fc764987912be706099f5a5d.pdf
- https://static.usrfiles.com/ugd/a8cc01_656a2aa578564ee7a88323dd3e667200.pdf
- https://static.usrfiles.com/ugd/9bd8c3_9381708de59c48ca8f7f3a2e78f94ee9.pdf
- https://static.usrfiles.com/ugd/b8c837_311dbce3144d43c98b3106dcf7d0116c.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_off00007823.bin` `e4ef5dce048dd57d0d77762313e4f7b5d82b7d8f7a9169bb19ec4567a81b3463`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7823	5440 bytes
`font_01_sfnt_off00008ab4.bin` `139fae39710754d1ac3846c330947a22e58e93e007e8ff93efbb16d2eecdfe76`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AB4	10436 bytes

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