Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eaaa9d92c771b85…

MALICIOUS

PDF

84.4 KB Created: 2021-04-10 14:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 33e9d97084108889973c6c796ab1cf7d SHA-1: 8d7609a8bb343de048a9d9ba1709ce3e11e7eec4 SHA-256: 3eaaa9d92c771b85195dadd373d51bd718d03e972736001ecfb6ffe75c2f473d
126 Risk Score

Malware Insights

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

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 0.9994

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
  • 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://druttle.ru/strik?utm_term=how+to+reset+turtle+beach+stealth+420x PDF link annotation
    • http://mini-camera-super.club/luxurolewanelojimikoraj9x5b2.pdfIn PDF document text
    • http://ooovseanalizi.ru/doa_barbara_capitulo_181_youtubeg8o2a.pdfIn PDF document text
    • http://filebitikuj.iblogger.org/exercices_svt_2_bac_international_maroc.pdfIn PDF document text
    • https://kazowutulegopos.weebly.com/uploads/1/3/5/3/135324393/nodonirusolojijopexi.pdfIn PDF document text
    • https://bagirarivevi.weebly.com/uploads/1/3/1/3/131384609/zanidazovetalezom.pdfIn PDF document text
    • https://renesixedobalew.weebly.com/uploads/1/3/0/9/130969137/7649882.pdfIn PDF document text
    • http://balegetiwep.mywebcommunity.org/47617157589.pdfIn PDF document text
    • https://xatikofaf.weebly.com/uploads/1/3/0/8/130814669/revutike.pdfIn PDF document text
    • https://kojaresojew.weebly.com/uploads/1/3/4/3/134312518/d90ac63b841c1be.pdfIn PDF document text
    • http://sks-expertiza.ru/wapowiwibulasedekluzt.pdfIn PDF document text
    • http://erogan-encolumbia.site/mevekoaw4uk.pdfIn PDF document text
    • https://semetipakes.weebly.com/uploads/1/3/0/7/130775831/jekijanewazufaf-wewunesax-niwed.pdfIn PDF document text
    • http://lokotahas.ru/16555925205tcngu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wawavaroxu.myartsonline.com/atlas_copco_products_catalogue.pdfIn PDF document text
    • http://lagokatu.epizy.com/tnusrb_answer_key_2020_download_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/13853293955.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/95378796825.pdfIn PDF document text
    • http://lesuketel.rf.gd/how_to_attach_file_in_php_mail_function.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/korufopur.pdfIn PDF document text
    • http://wedalavunobuwe.rf.gd/what_is_the_meaning_of_programmable_logic_controller.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/fujafudefaxugigav.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/laretavopawu.pdfIn PDF document text
    • http://kakasis.onlinewebshop.net/77624931862.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_off00010732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10732 5512 bytes
SHA-256: f9324bba2b562344514ef0c75b9f44e1aedca60a62704b0504e1a65ceb34b4a6
font_01_sfnt_off00011a00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A00 12128 bytes
SHA-256: 79896b555a9fb8f82e9c1a90d3d70ec65506b0c74da84fdbb1e0178cc9ccc7df

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