Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30bb60645fa96a3…

MALICIOUS

PDF

34.7 KB Created: 2020-11-03 06:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b4fa620bcc00351fef8d4f36e71d8f80 SHA-1: 05db8b5b80535520e519e26a4f67ac9345becb04 SHA-256: e30bb60645fa96a3f761f0ac67e0ca8340b00c524f1bede9f67693d42f25ec36
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to redirector infrastructure, including a primary link to 'gettraff.ru' disguised as a document download. This suggests a phishing or scam attempt to redirect users to malicious content. While no scripts were directly extracted, the PDF structure and embedded links indicate exploitation for client execution, likely via a malicious link. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/strik?keyword=applied+math+problems+and+answers+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f883d5f7e787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381081/normal_5f8d16e790a32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f871ac6da26b.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/a6ecbf06788df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5f88aef014880.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420018/normal_5f9797179b5f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377697/normal_5f8f61f7d1bcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5f9a600a2213d.pdfIn PDF document text
    • https://nugemezan.weebly.com/uploads/1/3/4/3/134359438/2b18a0bc25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5f9af059dc709.pdfIn PDF document text
    • https://bubudatitiga.weebly.com/uploads/1/3/4/3/134308982/133a5f424115.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/10aa95b4-52aa-45e7-9a3b-a0b556074835/20601256047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa5a576-96cf-415a-bb72-84ebd0e02162/nazi_hunters_book.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000658a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658A 5500 bytes
SHA-256: 04a0e87f6a5e9392b6a48a1a700e0424c46f5833bc856e0276aa98db94b42355