Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e59f272d12266c…

MALICIOUS

PDF

67.8 KB Created: 2020-11-25 02:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ddb663864329d9bd1d3e09283f5d2b94 SHA-1: 2fda0bd3a075bab25062abe61516703a8f86e259 SHA-256: 43e59f272d12266c9866fee30286ac94d492df798d45ec4693409141836752a4
214 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 and routes users through malicious redirector infrastructure. 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=uchiage+hanabi+sheet+music+violin In PDF document text
    • https://wajabanafeku.weebly.com/uploads/1/3/4/5/134599300/navorek-jijukupumofafu.pdfIn PDF document text
    • https://sibiwowimi.weebly.com/uploads/1/3/4/8/134868192/5c2fc8b1c5f2a.pdfIn PDF document text
    • https://sulabejo.weebly.com/uploads/1/3/4/6/134689147/681328ea8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391303/normal_5f9401b112442.pdfIn PDF document text
    • https://letolikasepa.weebly.com/uploads/1/3/4/6/134625664/bekul_jusavoxel_batazutifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f950e939ff27.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/gonavo/1984_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3237e8fb-7e6c-491e-90df-d1ca170bf113/87542033442.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/20463938389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31945e6c-d789-4b6c-a361-a3b58960b111/61818612830.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37a7a84c-8cca-4457-ad55-33b5c61fdc93/1734-ie4c_allen_bradley.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/baumatic_oven_manual_b501ss.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/laura_gasparis_ccrn.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_off0000cb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB11 5308 bytes
SHA-256: c45fdabed599b2f0fa705b288a953c54837c41c2b36f904d98651c5f852dba21
font_01_sfnt_off0000dd05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD05 11360 bytes
SHA-256: ea1dbfc43137aa5956e0f89c19808d50a8436d0e5df5ae94027f38b19db56792

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