Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0de63e333e7a8f…

MALICIOUS

PDF

87.5 KB Created: 2021-04-14 23:10:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c19cb09c912aa83dc900ee15249b44a1 SHA-1: 23c1aabef1b32a62f828fc5b02493e9b74f2285c SHA-256: ec0de63e333e7a8fa3d534b949fab502d2dfac5fbf1db82a3fc315f412f9a521
214 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including PDF_MALICIOUS_REDIRECTOR_LINK and ML_NYX_PDF_MALICIOUS. It contains a large number of embedded URLs, with at least one pointing to a known malicious redirector. The PDF also exhibits characteristics of a link farm, suggesting a potential SEO manipulation or phishing scheme. No scripts were extracted, but the presence of numerous external links indicates a likely attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://crophysi.ru/strik?utm_term=the+tyranny+of+merit+what%2527s+become+of+the+common+good+book+review In PDF document text
    • https://vufaredagisab.weebly.com/uploads/1/3/4/5/134585575/misuvizofatajiv.pdfIn PDF document text
    • https://dadekojulaza.weebly.com/uploads/1/3/4/3/134320805/9391234.pdfIn PDF document text
    • http://zoomita.space/accountability_significadohqqdo.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • https://ziruxirunilexa.weebly.com/uploads/1/3/0/7/130775543/savime-didesegegipum-xudoxufivexo-riruxeze.pdfIn PDF document text
    • https://jazemajotejavux.weebly.com/uploads/1/3/2/6/132681398/5989600.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/wofolufimapana.pdfIn PDF document text
    • http://eslife.pro/madasuwogubaxey9t0g.pdfIn PDF document text
    • https://molukubiluvu.weebly.com/uploads/1/3/1/4/131453067/603558.pdfIn PDF document text
    • http://sabumow.mygamesonline.org/ab_negative_blood_type_diet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_a663454cc86b4995aff0bd34b403870d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/sony_kds-60a2000_lamp_light_flashing_red.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/33730801514.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/identifying_noun_phrases_worksheets_ks2.pdfIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_bb169ad4594c4cebbf3ce5a5e6114ae0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4ca74f8-f5c1-4262-9420-1ca4ff21666b/bivokezaxuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f09a8ce-c8e2-4788-b952-7837fc08ad7b/lasogikulurudimamosuluge.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/honda_express_for_sale_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebefb3eb-a22a-4271-8285-8a61b891ea17/kagulonisix.pdfIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_0452f07054794ccf91cf1717ca1efa47.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/what_level_reading_is_junie_b_jones_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a4c772a-68eb-4eff-bcc0-c2b86b063cb4/35458691304.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_off000117c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117C9 5844 bytes
SHA-256: 0ad910e8eec65f11e79e17d8fa0139d069180179cbde8cd52a49712d8c393783
font_01_sfnt_off00012ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA8 10672 bytes
SHA-256: 4be60022a00993a92161bd215d1132e349b7089872d038c63a61771e74787958

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