PDF malware analysis — malicious · 9cc1f0c4a1d07528

MALICIOUS

PDF

51.6 KB Created: 2020-09-09 22:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 007322fb7ae3820adf356b913d920313 SHA-1: 7374c938f4f6402faa4fea048d36c705d4f37876 SHA-256: 9cc1f0c4a1d0752871abdee3e58914175e3316491f1661fe5c59c7e32ec9f783

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=probability%20pdf%20cdf%20pmf', which is flagged as a malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, potentially leading to further malicious content or phishing attempts.

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.cc/wb?keyword=probability%20pdf%20cdf%20pmf
- https://static.usrfiles.com/ugd/b8c837_e93bba4aaf294c8580a8d5815231a183.pdf
- https://static.usrfiles.com/ugd/eda9ba_c335a7bbd72f47c49bf21b689c8a446a.pdf
- https://static.usrfiles.com/ugd/b77b08_a6806a0943e04fb6ba0b50b765b0f103.pdf
- https://static.usrfiles.com/ugd/b85eb0_933f8d5bfed5413182356714de129ff3.pdf
- https://static.usrfiles.com/ugd/5b5da7_fc4cbb0dd04d4390acff9ff0f05f1d90.pdf
- https://static.usrfiles.com/ugd/b444d4_5f29131d057e470184e4ea4c014d36b7.pdf
- https://static.usrfiles.com/ugd/345929_e241753877bb4402b568dea7ca9cafc6.pdf
- https://static.usrfiles.com/ugd/838e7e_d664de03b6b14a8097713f4a7af3e10f.pdf
- https://static.usrfiles.com/ugd/61c57f_fe4ae6d959494fa18987014419ece26d.pdf
- https://static.usrfiles.com/ugd/b8c837_66ffbac10baa43a1afe90f3009dc55b7.pdf
- https://cdn.shopify.com/s/files/1/0437/3905/4231/files/oriya_bhagavad_gita.pdf
- https://cdn.shopify.com/s/files/1/0428/2574/4540/files/hsc_finance_and_banking_book.pdf
- https://cdn.shopify.com/s/files/1/0451/1747/2922/files/coliform_water_test_results.pdf
- https://cdn.shopify.com/s/files/1/0432/6798/1476/files/descargar_happy_wheels_para_android_full_version.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_off0000610e.bin` `e7493f17581e757d49ab82f86af5284242721555d7980b58025ec12a358ef011`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x610E	10424 bytes
`font_01_sfnt_off00008379.bin` `3aa237455a044ad1dd5884161c7a49bc0500345e87fb5bc57e00069550dc521d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8379	5368 bytes
`font_02_sfnt_off000095aa.bin` `d3ff4492b6f5c21f65d4cf0e32e5c474df9b93e5f02399d3c4f04d37c38cfbec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95AA	13808 bytes

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