PDF malware analysis — malicious · af51594d2369ff0b

MALICIOUS

PDF

55.4 KB Created: 2020-09-03 02:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 03086ddc39371b4cb4b948fe359e5ac9 SHA-1: 26b54f858c42d91fa6d799b69fc65223e924ad6b SHA-256: af51594d2369ff0be44484cf81cef0334c63cac34cdad2903bb20899aa18341e

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, a technique often used to create link farms for SEO manipulation or to obscure malicious destinations. One of the primary links, 'https://ttraff.com/wix?keyword=proform+600+le+elliptical+trainer+reviews', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in the attack.

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/wix?keyword=proform+600+le+elliptical+trainer+reviews
- https://cdn.shopify.com/s/files/1/0427/5693/1751/files/33987396275.pdf
- https://cdn.shopify.com/s/files/1/0432/2469/4942/files/doxujuduzukogis.pdf
- https://cdn.shopify.com/s/files/1/0432/7328/9888/files/lonazefafun.pdf
- https://static.usrfiles.com/ugd/8a419d_57eb010ad815402f9316e30fd306d500.pdf
- https://static.usrfiles.com/ugd/917232_c698b64a71dc4bf09aa725daf446baa1.pdf
- https://static.usrfiles.com/ugd/227d0f_ba2ead5f1eb54dea9fc3407fe8ed4bca.pdf
- https://static.usrfiles.com/ugd/912de2_dc7f0b005cf3448bb75f483041c939ee.pdf
- https://static.usrfiles.com/ugd/b88e3d_7663377b7bcd43628c508f77617bd0cd.pdf
- https://cdn.shopify.com/s/files/1/0430/5672/6170/files/gasawivididugumezodado.pdf
- https://cdn.shopify.com/s/files/1/0435/1816/5144/files/30922647274.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xasojikunu.pdf
- https://cdn.shopify.com/s/files/1/0430/3880/2073/files/67211236830.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/
- https://static.usrfiles.com/ugd/227d0f_ba2ead5f1eb54dea9

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007458.bin` `09c06f0b4cf4bd77d607252404dfe7452d34c9fe472ad5e7f4f0c27da1aeeb9b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7458	6424 bytes
`font_01_sfnt_off00008439.bin` `e6157499f95d6b7a8b8a6cb4cacb528f859ceda2975498f451a4241b7c87d6f2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8439	5612 bytes
`font_02_sfnt_off00009747.bin` `7af64ab9872338e037128916ca8a94ffd6e990775fc39c73af087e825c58acf7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9747	10260 bytes
`font_03_sfnt_off0000ba89.bin` `36f0f7c847a3d257bca3513ae5362ff552e89fccc363f2ec096b83b555007b24`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBA89	16148 bytes

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