PDF malware analysis — malicious · c4783291d58ca15c

MALICIOUS

PDF

45.6 KB Created: 2020-08-31 21:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8498199936dd06ea2454ee0326907d1e SHA-1: c25ed9d8a5eecb43dc322c08025f8d12d0a6de7a SHA-256: c4783291d58ca15cc08b80e819c8db4c7e59b010ca2e9d83cb00bc38a69aa5bd

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass link farm, with many links pointing to Shopify and static.usrfiles.com domains, likely for SEO manipulation or to obscure the primary malicious redirector. The primary malicious link, https://ttraff.ru/wix?keyword=cellink+neo+manual, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, suggesting the intent is to redirect the user to a potentially harmful site.

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.ru/wix?keyword=cellink+neo+manual
- https://cdn.shopify.com/s/files/1/0428/3308/4575/files/47209462045.pdf
- https://cdn.shopify.com/s/files/1/0435/1007/1448/files/11723147072.pdf
- https://cdn.shopify.com/s/files/1/0428/3593/5388/files/kinavulipemekagusir.pdf
- https://cdn.shopify.com/s/files/1/0441/1280/6040/files/gezuwerulopamufuj.pdf
- https://static.usrfiles.com/ugd/5ecadc_b49bc9f6de3143cb94abb9ac828fb68f.pdf
- https://static.usrfiles.com/ugd/b8c837_44a1880fd20142babd4d7fba13e2c0b5.pdf
- https://static.usrfiles.com/ugd/b8c837_69342fdacf574ec998994e85734cad52.pdf
- https://static.usrfiles.com/ugd/ad2ade_d687bfbd758e4809983961d578c52452.pdf
- https://static.usrfiles.com/ugd/0a593f_b12de9cd2c3f4bfd843d794733fede8a.pdf
- https://static.usrfiles.com/ugd/ea9bdf_bf38f1147e5a49228433adb36f42ff8a.pdf
- https://static.usrfiles.com/ugd/345929_a4d7fa6b2a784f5497ac2a3d932cb42e.pdf
- https://static.usrfiles.com/ugd/0dcf4b_811ac4b48c4b46e0926b61378a451cb8.pdf
- https://static.usrfiles.com/ugd/02beb7_4a98da7922a546bd966f7cc3ca9640a3.pdf
- https://static.usrfiles.com/ugd/55cc32_f6d8eefab4874b2bad79b2e8186d4e3a.pdf
- https://static.usrfiles.com/ugd/9c0842_8714712b242f4dcc85c957c1353711d6.pdf
- https://static.usrfiles.com/ugd/9c43ec_b7a641b064df41fdaad8b6aee708e8db.pdf
- https://static.usrfiles.com/ugd/b8c837_11b10c51d7214f03b9ec3cc31a395f1f.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_off00006894.bin` `d7ecd3664dbbca37d83b4e3a859832a08e3a51b8c8e73cc94874d1d785a70cc7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6894	4448 bytes
`font_01_sfnt_off0000778d.bin` `34eac269ff61b3723d68bd4ee0c8e82c0a957a8571155178f5d55ca3ee4a57c6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x778D	10860 bytes
`font_02_sfnt_off00009b69.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B69	4324 bytes

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