Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e23d327027a8fa4…

MALICIOUS

PDF

118.0 KB Created: 2021-03-17 23:10:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 4e0feda3044877f6abfa208c7d090d2b SHA-1: da1eb0eeb32e3a2fb5d77bc0e505f9b9a08864b6 SHA-256: 4e23d327027a8fa4a53786e7aa239748ad22033afcb9f6f6fb5387bdd3e659c2
164 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics strongly suggest malicious intent. The document body, though heavily obfuscated, appears to reference 'Canon rebel xs manual pdf', likely a lure to disguise the malicious nature of the embedded link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mezovuduw.ru/wix?keyword=canon+rebel+xs+manual+pdf PDF link annotation
    • https://xujikipige.weebly.com/uploads/1/3/1/3/131379844/2876621.pdfIn PDF document text
    • https://malotote.weebly.com/uploads/1/3/4/8/134872882/fipazirabig-tutudulixubus-kosefunenilir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_60314fa6cda78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419002/normal_6003974fb297b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419192/normal_5fdf120ac2f39.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/palevijuj/dowonukasaxarukolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/797621a0-0ae5-4f6d-94e2-e4e365e6e385/northern_ireland_postcode_format.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/how_to_figure_out_monitor_model.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_c49919958b8a4aa58484a9c43a5818bb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c7fce8c-7039-4e38-b2e7-c09f5b0031f6/lawn_boy_522r_snow_blower.pdfIn PDF document text
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_7d94874eb0884f0ea5ee706b2e99596a.pdf?index=trueIn PDF document text
    • https://58552d80-c20c-4e4f-99b9-91bedbcc07a3.filesusr.com/ugd/c18496_d1e576efaa8f42db8e9a91bea9193294.pdf?index=trueIn PDF document text
    • https://52ed6390-a5c1-4502-9f93-599cf6d98ad1.filesusr.com/ugd/f7fbc8_e27bcd941fd3481dbcf1c1813761393d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sepawi/dolmen_city_reit_annual_report_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/2859059336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6df876a-e2b3-4f9b-80bc-3156343f66eb/tifamubegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd5f9d43-4770-4558-90f6-7561f7152acc/13746986476.pdfIn PDF document text
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_e3bb71d3c9114352b77dc0dfafa3103b.pdf?index=trueIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_8e440c66eee24b279a20ee2aedd81777.pdf?index=trueIn PDF document text
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_883a7368291a447bb7739bcb0afb6522.pdf?index=trueIn 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_off00018f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F6E 5300 bytes
SHA-256: 987fce2a292d57f4bd266bd7b40bd03888e2541ec980e527fa22e44716c44d7e
font_01_sfnt_off0001a155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A155 11920 bytes
SHA-256: bc632e66c3ab2ab98a066d650dd393ecded200c756af401741e1bd47b5684ae7

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