Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e6b560dfb00ed4…

MALICIOUS

PDF

80.9 KB Created: 2021-03-30 06:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b7b7398e69dffb11f5456b73b3dea8bc SHA-1: 19a5a21f5dfcf499c6181025af80f61ee1b25bec SHA-256: 17e6b560dfb00ed4a1e2a40a4400f442f54486817cd55d0f0a973228987b33d8
186 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 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/award?keyword=bible+promises+kjv+pdf PDF link annotation
    • http://nakozovuzu.22web.org/zorifewexiwite.pdfIn PDF document text
    • http://roxobupupop.22web.org/56174690357.pdfIn PDF document text
    • http://vugiris.22web.org/winaxoronixavagivebixex.pdfIn PDF document text
    • https://temisufe.weebly.com/uploads/1/3/5/3/135384001/371dcd07e405cf9.pdfIn PDF document text
    • https://mixuvuweti.weebly.com/uploads/1/3/1/4/131483588/gatabuveto-timeretor-wemami-bofozeranupujo.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/filixa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446770/normal_600927c1b08a3.pdfIn PDF document text
    • https://mifugitosa.weebly.com/uploads/1/3/4/6/134631290/jisixiweziva.pdfIn PDF document text
    • https://bofejaximolapob.weebly.com/uploads/1/3/4/7/134751884/3213914.pdfIn PDF document text
    • https://pukexomupuko.weebly.com/uploads/1/3/1/1/131164185/1429390.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446030/normal_5fee0d9aa75e6.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/1d6f4757-49d0-4112-bc50-f478961f50e7/how_to_automatically_multiply_two_columns_in_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a06c9a4c-5db4-436e-b2b7-6749fac803ca/88509558788.pdfIn PDF document text
    • http://rujugojokukasav.rf.gd/autogenes_training_formeln.pdfIn PDF document text
    • http://ruxukakex.rf.gd/lerakasugibitujif.pdfIn PDF document text
    • http://jasosuwer.epizy.com/drumless_backing_tracks_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/650b75a8-7c62-498a-9bfe-162465e0cb6a/sas_ods_title_font_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96da1750-8bdd-4ca0-85c3-e98117b3fc53/4532513492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ea7098b-0515-4dbd-a1df-2f7c54c45540/bow_tie_pasta_dinner_ideas.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_off0000fee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE1 5364 bytes
SHA-256: 28e8f67835266785f1a018cda588a1ac08e3cd11845519ca3c9c2c5be3de91e3
font_01_sfnt_off00011117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11117 10884 bytes
SHA-256: 3b10f37405bbf2da6db681013635723076b2e769a5e558337759aa2c7fac2ad5

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