Malicious PDF — malware analysis report

Static analysis result for SHA-256 462c4347624696fe…

MALICIOUS

PDF

68.7 KB Created: 2020-11-12 12:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: acdee9170543575ff7574ed6c2397faa SHA-1: 22993e297d02c80fb98b65ad27eab5d6d7e4c296 SHA-256: 462c4347624696feee63a34c97b6b3f4c5d963a4145d821de1556a4fe73dbfd8
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafffe.ru/123?utm_term=birmingham+ethnic+festival PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446377/normal_5fabdd9a4fa27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419206/normal_5f98f777d2850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_5f8a5b4c77bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385230/normal_5f8f79ba1b1cb.pdfIn PDF document text
    • https://bujugerevik.weebly.com/uploads/1/3/4/6/134677448/8aec38be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_5fa48634eec49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/rofuwilubumoxupenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cfe4ae6-2552-4fc1-8e47-d3b3e901a487/ballistic_coefficient_chart_nosler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/745b4cba-b172-4279-9a9a-0fba7f881bcb/ruzepavijanuna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/332dae2f-8c1f-4868-a2b9-ecab723bfa41/18768497542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3cd046f-cf0f-45bc-aebb-0421c5011c9d/70279736808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2199e5c4-09dc-42a9-81f7-e40b4e581c66/56689951185.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/61999472028.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_off0000d030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD030 5404 bytes
SHA-256: 41bc33ab35ebaa93d6ae1e70a0b02229360cad36cac7cf86700e4f6e3f355d03
font_01_sfnt_off0000e277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE277 10708 bytes
SHA-256: d853e3e21cadbdb7322d29ccb4cd7b8f6a1636d8a78ddeeea877f880fb91ca73

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