PDF malware analysis — malicious · 9872d681c2ee1ae6

MALICIOUS

PDF

32.0 KB Created: 2020-10-29 01:05:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2381358255007f4e033a40080e82507f SHA-1: 596464f63edf21a10f5bc4c6f534faa096b0d949 SHA-256: 9872d681c2ee1ae6ece90f1a3860362f82c3b99264f73daa9d2f675a8ce1166a

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute traffic. While no scripts were directly extracted, the nature of the embedded links and the ML classification point towards malicious intent, likely to lead users to further malicious content or to obscure the origin of traffic.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://ggtraff.ru/123?keyword=enchant+command+generator+1.14
- https://cdn-cms.f-static.net/uploads/4379221/normal_5f93b0de42909.pdf
- https://cdn-cms.f-static.net/uploads/4383795/normal_5f8bd85df1346.pdf
- https://cdn-cms.f-static.net/uploads/4366956/normal_5f8d681274f25.pdf
- https://cdn-cms.f-static.net/uploads/4386829/normal_5f91f38c00a8e.pdf
- https://cdn-cms.f-static.net/uploads/4412897/normal_5f99f34e666a9.pdf
- https://cdn-cms.f-static.net/uploads/4386084/normal_5f8cbcce6dedb.pdf
- https://cdn-cms.f-static.net/uploads/4369928/normal_5f990f1c49aef.pdf
- https://cdn-cms.f-static.net/uploads/4368740/normal_5f92555f8ff2a.pdf
- https://cdn-cms.f-static.net/uploads/4366964/normal_5f876219b20d9.pdf
- https://cdn-cms.f-static.net/uploads/4366964/normal_5f9104fb2f035.pdf
- https://cdn-cms.f-static.net/uploads/4391308/normal_5f94fd34d513f.pdf
- https://cdn-cms.f-static.net/uploads/4393489/normal_5f94fa21dfba0.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gapivegek/analytical_reasoning_questions_and_answers_with_explanation_for_nts.pdf
- https://s3.amazonaws.com/jamokaroxoj/lobakebagelumukomejaxasil.pdf
- https://s3.amazonaws.com/bokofapig/51718342232.pdf
- https://s3.amazonaws.com/vinivuxo/vegas_pro_13_serial_number.pdf
- https://s3.amazonaws.com/zufojadibi/turiyatita_upanishad.pdf
- https://cdn.shopify.com/s/files/1/0502/3576/9012/files/lapuzulejomuju.pdf
- https://cdn.shopify.com/s/files/1/0431/0512/4503/files/tifijoj.pdf
- https://s3.amazonaws.com/lixuzo/jetexefugopavejeg.pdf
- https://s3.amazonaws.com/neviwove/books_to_read_about_life.pdf
- https://s3.amazonaws.com/teximikamukubo/12950521283.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000672b.bin` `41b81e66ccddce51773fdfc63acd4da68705e901cde7855aadf2faddddfbc2ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x672B	5012 bytes

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