Malicious PDF — malware analysis report

Static analysis result for SHA-256 48303490b465c7de…

MALICIOUS

PDF

34.3 KB Created: 2020-10-09 02:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bb16572f439eb2f24415af80f0960347 SHA-1: f41a17df17e533a5094c8b2ccbac1cc91c5114e6 SHA-256: 48303490b465c7de96613afa450de6c8a148b79bb17144cae6305ebc6a1cee26
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that one of these links leads to known malicious infrastructure. The presence of numerous links suggests an attempt to drive traffic to potentially harmful sites, possibly for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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/strik?keyword=cheat+india+movie+ringtone++pagalworld In PDF document text
    • https://site-1037903.mozfiles.com/files/1037903/nomorasik.pdfIn PDF document text
    • http://files.golnazbehrouznia.com/uploads/1/3/0/7/130740510/mowopexofegijewo.pdfIn PDF document text
    • http://files.hesslerdnetwork.org/uploads/1/3/1/4/131452771/zilovakife.pdfIn PDF document text
    • http://files.hippychic.us/uploads/1/3/1/3/131380511/ebd4c596b404936.pdfIn PDF document text
    • http://files.chambleesoccer.com/uploads/1/3/1/4/131438018/1a5de.pdfIn PDF document text
    • http://bekakoxa.lifecoachmaurita.com/uploads/1/3/1/6/131637814/nunetutovulesu-lonedewegojux.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/39ebf02d-434a-4253-a9c9-524077e67cc9/24350970630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd38d57c-3ec2-425e-90a1-78935f06c9f1/limivovafixikiwetoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad009a9a-de1c-4cba-945e-cf1d10f73b04/pegulefogufijipepodatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dd02b7f-4be6-42b3-be73-9b8bb3b9d5f9/tifozimojazedabuzosut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f1b70b-5e08-464d-997f-2d25666506a3/tajukijogikomupejus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd4580c4-29cc-4c3d-93f8-42155e31f97b/kidamuzubesitevun.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_off0000494a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x494A 5252 bytes
SHA-256: ac8e9532c8c955763fb7bbb9f8efedce42e990961beffee468bc8dfaf05b9fe3
font_01_sfnt_off00005b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0C 9652 bytes
SHA-256: b5e977a357ea411b12f2267c383d6fee43bf061fe3e75bc2dfc187e5f5333077

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