PDF malware analysis — malicious · fed158975fba897b

MALICIOUS

PDF

39.5 KB Created: 2020-08-29 04:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5bada8b78b1ed3f9bd3c9203fa100a24 SHA-1: 58fa9b8e9e252e507d3daccb79bbeba2d4328905 SHA-256: fed158975fba897b3e66a761587a324ce6ab7330b93d5dc1e1293141deac5d6d

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used to obscure malicious destinations or to create a link farm for SEO poisoning. One of the primary links, 'https://ttraff.cc/wix?keyword=tu+hoc+dan+guitar', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=tu+hoc+dan+guitar
- https://static.usrfiles.com/ugd/b8c837_f5f882c6613d40fea5d074ba869034d0.pdf
- https://static.usrfiles.com/ugd/b8c837_d5a2aee70f5c422ba252edaf7453e7c7.pdf
- https://static.usrfiles.com/ugd/b8c837_d1b8ade76229454ea10986fb5444fb58.pdf
- https://static.usrfiles.com/ugd/b8c837_9f8e99e0d2064a16a84b997467f63680.pdf
- https://static.usrfiles.com/ugd/b8c837_104ba1b2b00b40cab1152d3abcee4455.pdf
- https://cdn.shopify.com/s/files/1/0438/4574/6838/files/sujatiku.pdf
- https://cdn.shopify.com/s/files/1/0431/9988/9569/files/complete_beatles_recording_sessions.pdf
- https://cdn.shopify.com/s/files/1/0450/7149/9416/files/65811559270.pdf
- https://cdn.shopify.com/s/files/1/0433/7873/7302/files/sajaxilakaroraburav.pdf
- https://cdn.shopify.com/s/files/1/0431/9094/3902/files/21163546781.pdf
- https://cdn.shopify.com/s/files/1/0439/8976/2206/files/zekolelebudezakivu.pdf
- https://cdn.shopify.com/s/files/1/0429/4616/6943/files/45782518186.pdf
- https://cdn.shopify.com/s/files/1/0437/5651/9578/files/xuzamivorubuzosor.pdf
- https://cdn.shopify.com/s/files/1/0435/5696/2465/files/definition_of_clothing.pdf
- https://static.usrfiles.com/ugd/b8c837_aa8fbb4b95394160820bdbedba2ec3fe.pdf
- https://static.usrfiles.com/ugd/b8c837_080d75403d4c4c2cac09443b0a8bb7e2.pdf
- https://static.usrfiles.com/ugd/b8c837_410966e5322a4ca48b87145b521dec47.pdf
- https://static.usrfiles.com/ugd/b8c837_6a98962d20ce425584814013ffffe319.pdf
- https://static.usrfiles.com/ugd/b8c837_b1c18537395544b990b7f884db664f53.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_off00005dd5.bin` `ce3c94420dbed3442101601f74c0c07358fbc9a2b30b7af57cd68da1f5a92cb7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DD5	4940 bytes
`font_01_sfnt_off00006e95.bin` `5735e6ba5e5df0ce67fc38ff300812b12cf70756fe308f91f379e1d77174a006`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E95	10068 bytes

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