Malicious PDF — malware analysis report

Static analysis result for SHA-256 f946c2d9a606c418…

MALICIOUS

PDF

79.4 KB Created: 2021-09-15 14:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 789b23cdd60d9f1852c3500eb1355c9e SHA-1: 1ad0670a946e5e978a11e2d39a77504643a7c0c4 SHA-256: f946c2d9a606c4188cf5e10450721f1f1e60a5c854061a66556e28324eaf8385
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including a high ML score and ClamAV detection as a phishing trojan. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The presence of embedded URLs indicates an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://coretry.ru/uplcv?utm_term=imei+change+android+10 PDF link annotation
    • http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/25060334196.pdfIn PDF document text
    • https://principesgs.com/userfiles/file/43747911171.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/jamazujuzu.pdfIn PDF document text
    • http://beachfirebrands.com/userfiles/file/pimawigogowu.pdfIn PDF document text
    • https://alzubidi.com/userfiles/files/lifevumopojapujidemo.pdfIn PDF document text
    • http://marasintl.com/public/ckfinderuploads/files/jenidaxog.pdfIn PDF document text
    • http://lawyergz.net/uploadfile/files/bosapuzamuxubu.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/78103397637.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/d8c38ac1226c2edce696c4229e64b06a/worisizipapidobewonidoma.pdfIn PDF document text
    • http://www.teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/talikorukixanolabaki.pdfIn PDF document text
    • https://worldtradezone.com/userfiles/file/70152550171.pdfIn PDF document text
    • http://kingsap.com/file_media/file_image/file/fopanoz.pdfIn PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/benofanewixa.pdfIn PDF document text
    • http://boilerservis.ru/uploads/files/12420189471.pdfIn PDF document text
    • http://astorandblack.net/emailer/userfiles/file/donelepaxafamuw.pdfIn PDF document text
    • http://kondicionery-ivanteevka.ru/upload_picture/file/37667881695.pdfIn PDF document text
    • http://zlhk.ru/upload_picture/file/zokuzevonovujitene.pdfIn PDF document text
    • https://lanegarrett.net/userfiles/file/nitizarutogax.pdfIn PDF document text
    • http://ersenergy.com/UserFiles/file/xefabobikoxikiji.pdfIn PDF document text
    • https://srilangkapools.com/contents/files/33784025096.pdfIn PDF document text
    • https://mosallaesf.ir/uploads/ck/files/54529242501.pdfIn PDF document text
    • https://birotex.rs/images/files/87481357990.pdfIn PDF document text
    • https://mepho.hu/ckfinder/userfiles/files/37306859318.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD569 10632 bytes
SHA-256: 681a184d6fad04a00d2d91038e4a3c987fc297548c7893c1c8e8156aacd33f84
font_01_sfnt_off0000ed46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED46 16652 bytes
SHA-256: 899a3fdf88c795d32c6fb367c92300264a6f2b5716751ed2a1d7e061affed311
font_02_sfnt_off0001186c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1186C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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