PDF malware analysis — malicious · 061d583e1be07706

MALICIOUS

PDF

62.9 KB Created: 2020-11-24 07:32:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c3ad52832794ac6e5a1a2118986de3be SHA-1: 78ecf21302fa698de18257511d2d00f6842aadf8 SHA-256: 061d583e1be07706e3cb9e73c45e8f6736d1866bfd1422b8ac9b8dd3c45c0e9e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF link farm' designed for SEO manipulation. The embedded URL 'https://trafffi.ru/123?utm_term=last+stand+3+hacked' is flagged as suspicious and likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to 'Last stand 3 hacked' and the authoring application 'wkhtmltopdf', suggesting a deceptive lure. The presence of embedded URLs and the link farm heuristic strongly indicate an attempt to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.8776

Heuristics 4

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.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
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://trafffi.ru/123?utm_term=last+stand+3+hacked
- https://futivodefumir.weebly.com/uploads/1/3/4/8/134861147/f23b11320514.pdf
- https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/1289421.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/lolaritemukole/horario_autobuses_madrid_avila.pdf
- https://uploads.strikinglycdn.com/files/ec0d7e14-6bea-4d57-91cc-c6c4c6eaceca/vezofejuxedox.pdf
- https://s3.amazonaws.com/jixerubowi/core_java_multiple_choice_questions_with_answers.pdf
- https://uploads.strikinglycdn.com/files/ed3bcbf3-c1b1-4fc2-8482-cbe19229fcab/70131384613.pdf
- https://s3.amazonaws.com/lanorolowu/alimentacion_saludable_para_nios_de_1_a_3_aos.pdf
- https://s3.amazonaws.com/zoromexemuzid/85291673560.pdf
- https://uploads.strikinglycdn.com/files/4f3a8a8c-a452-470a-8e73-3664b114ce2f/noseloxiredibarinaseragu.pdf
- https://uploads.strikinglycdn.com/files/8fcee1ed-5e60-4be7-8a78-4bc75917efd9/rubiks_cube_user_manual.pdf
- https://uploads.strikinglycdn.com/files/cc333d06-d6aa-4edd-a355-7d1428c28d65/45872846980.pdf
- https://uploads.strikinglycdn.com/files/44c0063f-5f06-4704-8729-f1c7a136d899/gopemomumukadite.pdf
- https://uploads.strikinglycdn.com/files/f8749ca1-9c33-40be-b5d8-3bb9d536d09d/tanakexedamuzubadidoba.pdf
- https://s3.amazonaws.com/xezonijida/livanipenosigudoduzusor.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cc89.bin` `084cc968db7a1b7d9f883e2515193e6c225cfd6fdbadd968d14083a29ece36f4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC89	5068 bytes
`font_01_sfnt_off0000ddca.bin` `ab812fbf4465aa22f33c8fda659c9d3bae4522e9144a7c29269d26563658e9e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDCA	10984 bytes

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