Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26302b954d54958…

MALICIOUS

PDF

73.1 KB Created: 2020-11-14 03:56:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 52349310d3e5944da65b4be760bb9fda SHA-1: 269e5b670543c715313eceb40f000796c59bc141 SHA-256: c26302b954d549581ed4809941a571333f4a5a98934c660a5812a180cbdac28b
216 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a QR-code lure and a remote-support lure. 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 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://trafftec.ru/aws?utm_term=android+studio++pc+64+bit PDF link annotation
    • https://votewisuzub.weebly.com/uploads/1/3/4/6/134605747/mawowofos_danuju_norukuxedez.pdfIn PDF document text
    • https://dupasaku.weebly.com/uploads/1/3/4/2/134235895/3060232.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/bfef765c-3a1c-402f-81e6-27d608ce2026/20005888222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/999523d6-a28a-49ee-8393-56c7b2a05eb7/zitaxozalakuruwezeweral.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a143f070-f153-4042-bf12-669185553825/35956043210.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/adverbial_clause_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ee3ebdf-b2f6-420d-a130-5d2f2056dfd2/important_of_banking.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/logutuxida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aac9b451-684b-4424-bf34-a0178a6c0a67/luzazawojezagojup.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

Related samples 8

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_off0000e20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20E 5196 bytes
SHA-256: 9715b4571e3c18a319a600a2277742a59813a7617437fd94497e75e2e45cafac
font_01_sfnt_off0000f3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CE 10612 bytes
SHA-256: a2a6e3babffdb60c924d990abf25e17d26839906f35594ddb3b573655b7046ca

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