Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a23aec5236bf94…

MALICIOUS

PDF

99.8 KB Created: 2020-10-25 07:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ec35bf831ee1304b3488de912c001619 SHA-1: c76c30c6cfd86ea8fc3c89e756fc200d0782434a SHA-256: e3a23aec5236bf9411adf261e5a340f569f521d1a532b317af232ef8dc57bcdc
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic indicates a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of the file. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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=third+crisis+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8b3e7f74841.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f904eaba76ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369926/normal_5f913d6be5063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f915942d4d81.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/9902509.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/e828ef01abe12.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/causes_of_social_anxiety.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/article_371_j.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/95409196194.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/definition_of_water_conservation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0826/1795/files/rittal_product_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4502/7993/files/ryobi_weed_eater_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0137/5650/files/lexington_va_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7050/0247/files/flank_area_adalah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7532be8-ade4-42fa-a193-7b9bf5e68f90/arduino_basic_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb623021-2ed6-4083-9adb-1bbe94b0c2bf/satlan_maln_maliyeti_tablosu_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f8efd49-6399-4365-b572-0a7ed8722fc2/xekamobetexobin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46f044ea-9e65-4d68-b1fe-f7d9c90d6bef/lamakaxidarenadajitowute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d2b1e48-1446-42b1-974a-7388f6bbe4d0/zuweburawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe43ca7-6b98-4f38-97f6-d8b78987cfdb/17381370615.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000159d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159D8 4908 bytes
SHA-256: 4cc24e1d75553287b5b0d39dee21e7df544e66e280544bbb900cd67e1e410306
font_01_sfnt_off00016a86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A86 11108 bytes
SHA-256: a2834e32e7adf61005c4dbcd7b45f2d297e1bff5b8069020abf2965405276451

Open this report in the interactive analyzer, or submit your own file for analysis.