PDF malware analysis — malicious · ff55e4e14141c00f

MALICIOUS

PDF

64.6 KB Created: 2021-01-06 13:24:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24

MD5: fa7599fa81b1c5911e005aa21594e321 SHA-1: 2c2ccf6534451e79573b432fe1e6c900a128420d SHA-256: ff55e4e14141c00f052e4e8fe17cb21eca8822053f6625a021b3e7bd3411ad5d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9819

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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://trafffe.ru/wb?keyword=fishing%20clash%20gift%20codes%20for%20september%202020 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4382974/normal_5f96bf3bc5c91.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380876/normal_5fdd1636dcc29.pdfIn PDF document text
- https://cdn.sqhk.co/mudinaxape/A8jbdjq/77551038974.pdfIn PDF document text
- https://gazelavulokar.weebly.com/uploads/1/3/4/2/134265358/pimezavumalumawop.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471236/normal_5fbba044ef067.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403680/normal_5fa3e983e79bd.pdfIn PDF document text
- https://tedisizizifem.weebly.com/uploads/1/3/4/2/134235801/7171244.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425727/normal_5f9e4530191b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417408/normal_5fac6067c72a2.pdfIn PDF document text
- https://guwopatuzigumi.weebly.com/uploads/1/3/4/3/134334434/lagib-javadodigaj-kolanosalovu.pdfIn PDF document text
- https://cdn.sqhk.co/xafiguzi/7jihijc/donkey_kong_arcade_artwork.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449422/normal_5fb559fa62d13.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/538190d2-0706-4895-b279-57b5a9d83702/36277343937.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_off0000e7c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7C6	3036 bytes
SHA-256: `d2ed5415ab744820fe251ed448e46d6248ca6fb6db9c710ab144702aa09dc6f3`
`font_01_sfnt_off0000f2ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2AB	5940 bytes
SHA-256: `0ee0d6e5b17b05504648558330de02dd75fae110c8aaf09bb43a6c659b077aaa`

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