PDF malware analysis — malicious · 3af846b820054dc0

MALICIOUS

PDF

39.0 KB Created: 2020-09-07 06:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 38a905093b27ff9b292a3b70854686f9 SHA-1: ed3a9154b61363f22a69279de5844c11150a1282 SHA-256: 3af846b820054dc0021384beb6fa92f1670eca664da293353955197372c8a122

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.com/pify?keyword=brazil+2018+world+cup+song`. The document body, though heavily obfuscated, contains text related to the Brazil 2018 World Cup and the wkhtmltopdf application, suggesting a lure. The presence of many external PDF links indicates a link farm, likely intended to distribute further malicious content or host phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9993

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/pify?keyword=brazil+2018+world+cup+song In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/18574e_80ec9af15074414384cf7626d920fdcd.pdfIn PDF document text
- https://static.usrfiles.com/ugd/857e61_5755d90051b04218a630deeee274f737.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_d11437a55e144f4ba2404a42807a9aa8.pdfIn PDF document text
- https://static.usrfiles.com/ugd/895bef_1afa83bd7ea94bd39a9dbadbe983088e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/f59309_6aa1fc9a96574d479c63c36fdb0babc1.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6521/2066/files/passport_application_form_annexure_h.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1373/3534/files/sabegi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8662/4406/files/apocalipticos_integrados_umberto_eco.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a474dd_e1159604b2864b18adae7ec25ab8844a.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_ff72808bf56a467499be93704337857a.pdfIn PDF document text
- https://static.usrfiles.com/ugd/314c35_c99267d93899471cb44610af8eb1f7bc.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ade4e6_00b4f48b26ea4d099ab6b5f531731f14.pdfIn PDF document text
- https://static.usrfiles.com/ugd/cb2bed_4310a35edd28483391f8918666e30a79.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a4d998_9cdf0b7c47d441e88b0af10a580c2b1f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/9edd50_31d4fecd8ad5437a847f923061dccc90.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b0cb2d_fe9e66dacdad496fbeb34c7da53deb8e.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000067da.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67DA	5952 bytes
SHA-256: `9f979045da90b61ce6a4dd9f322790cd3ff202d8b861cc44938e37e2597435cc`
`font_01_sfnt_off00007c44.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C44	11032 bytes
SHA-256: `8b3226074c7265928ab8673dbca18251b1e849c2fa6d5e9ffb8d20122d09bdb0`

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