PDF malware analysis — malicious · 32c6fd697ceefac5

MALICIOUS

PDF

55.6 KB Created: 2020-08-29 14:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9e184dd9456db3daca9473fc63ccb144 SHA-1: 8364e0919088ae28cc3b742b787af5f9903bbd62 SHA-256: 32c6fd697ceefac59063244b524968a23289250efc19fb3b4732312a048e21b4

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at ttraff.com. The document body, though partially corrupted, contains text related to a 'certified information systems security professional study guide', suggesting a lure. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves directing users to malicious infrastructure via a deceptive link.

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=certified+information+systems+security+professional+study+guide+seventh+edition
- https://static.usrfiles.com/ugd/b8c837_6ac85aa85a6c4456be04a1ff789b1937.pdf
- https://static.usrfiles.com/ugd/b8c837_71fe98f1b16747c3a72ae10e3b4669d6.pdf
- https://static.usrfiles.com/ugd/b8c837_49784e5166614353b71c0d5154008531.pdf
- https://static.usrfiles.com/ugd/accd1f_b9b6555d50c0408f9b3b53b6d8e0d602.pdf
- https://static.usrfiles.com/ugd/b8c837_196c6694c5074fdab78e83b1d9110e4f.pdf
- https://static.usrfiles.com/ugd/b8c837_c0548e9bc00a44e48fcb6ea0fc69947d.pdf
- https://static.usrfiles.com/ugd/b8c837_dd7b245c3f97477db917eeb81f262350.pdf
- https://static.usrfiles.com/ugd/b8c837_c99193cc0183462995fb5114baa79c59.pdf
- https://static.usrfiles.com/ugd/b8c837_d062b4173d9440a387dc93ee47a0c1d5.pdf
- https://cdn.shopify.com/s/files/1/0437/5507/7790/files/ruximemitofaniloju.pdf
- https://cdn.shopify.com/s/files/1/0435/4395/3563/files/82674103811.pdf
- https://cdn.shopify.com/s/files/1/0437/9013/9549/files/wukefijuxoz.pdf
- https://cdn.shopify.com/s/files/1/0433/2018/0894/files/69061614902.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008d28.bin` `c1f534ecf19ab5dd4bec074efddcd333317b946cb3e436f9fe0d70ebaa567560`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D28	3016 bytes
`font_01_sfnt_off000097e2.bin` `c3fbecb371ec8bd28ba4c8be46862082a0d1ea8ae22e03137246c17c9e25e007`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97E2	5636 bytes
`font_02_sfnt_off0000aae5.bin` `9f75c9cd9a5f4377ee7b0e606a59de193f4c7d20b8337c370776840f953363d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAAE5	10976 bytes

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