Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ca90c0c0ed04e7…

MALICIOUS

PDF

68.2 KB Created: 2020-11-24 14:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9291813651f86e296db5ec56d570f53e SHA-1: bcd8c740add5401809ec228ae291f389cb36fad9 SHA-256: d5ca90c0c0ed04e720280385ba3da1ceed8ac7de73c970a1ef09e9710b2be442
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many pointing to Weebly-hosted PDF files, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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
  • 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://traffine.ru/strik?utm_term=poynette+high+school+football PDF link annotation
    • https://gikigafe.weebly.com/uploads/1/3/4/4/134440869/d52dc.pdfIn PDF document text
    • https://ganunuzarije.weebly.com/uploads/1/3/4/5/134518475/0099082fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f884cecc0fe7.pdfIn PDF document text
    • https://folugaso.weebly.com/uploads/1/3/4/5/134503816/0bfe8795c3b1f3.pdfIn PDF document text
    • https://bukusafirede.weebly.com/uploads/1/3/4/2/134266240/zapaxapakesavu_kokoriwivu.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/wusinaje_zeluze_fudakatulizix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383797/normal_5f937ac528cf2.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/d25e1005-01bd-4178-902a-38046c17be68/seven_mortal_sins_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/540f17a7-a8fa-46b6-a446-f294dbbdefcc/48354582900.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/535a1a4d-0b42-4940-8cf7-50c307393623/tozigiwufofomazatipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe82738d-bf86-4d06-a9f7-75aab6f3b978/invisible_man_study_guide_teachers_copy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41fd975e-dee8-4ab2-8e28-a7de0414c746/ragnarok_leveling_guide_2017.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_off0000ce13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE13 5288 bytes
SHA-256: c1fc6461f4279fa7bfd29d571b7c803704fabb523eb6fc49607443bcd56daec5
font_01_sfnt_off0000e029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE029 10584 bytes
SHA-256: a28292d59ee751ee6bf75ab6f7a6c2f91defc4a1e0dfe821e8d75f83e899a7e0

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