Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb20f5b7d58c38e…

MALICIOUS

PDF

74.9 KB Created: 2020-12-25 20:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 9753cd6c20f3efb987a7a092a74eba80 SHA-1: ea3271e55496b22474d1f8cf128c69a3441878cb SHA-256: 6eb20f5b7d58c38ebad64775e35ef4fdce566e0c998e090435bb7aca47b29525
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying it as a malicious redirector and part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/123?utm_term=sushi+cat+2 In PDF document text
    • https://noxagutut.weebly.com/uploads/1/3/4/4/134483949/1609350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476282/normal_5faf8a59d94b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475571/normal_5fa56fa021efa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408992/normal_5fc7a4d31c92a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376869/normal_5f8d4e7dc2383.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422894/normal_5fcc527921f47.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/47a2a75d-fd5d-45b1-b21d-b462e87aa63c/dropbox_la_paz_bcs.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/47398257721.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/tufifebiwututemidakufina.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/baixar_snaptube_2019_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/92105324188.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/airbnb_rental_agreement_needed_required.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cb10f79-4d88-4820-9159-f7fd7b021bdd/rags_to_riches_guide_words.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/autotune_pro_free_reddit.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8B 4992 bytes
SHA-256: 13761af7e451062789970c7a03278ab13f634f77791fb2754ab796768c2cb0e2
font_01_sfnt_off0000fb85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB85 10436 bytes
SHA-256: 203d12f6e86d5c467225238de71e4a1580ff9ab0c0f9b604782d2e50a43c9c7c

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