Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb5425010d505ad4…

MALICIOUS

PDF

79.7 KB Created: 2021-09-11 10:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: e9d150cb52ce694877c0a1c3282e4c7b SHA-1: ac19a749013c81b08d2bb7d175ad4dcc2ae750a2 SHA-256: eb5425010d505ad41a3b2cec094de439c218584e9b2be4276743ad2c8ac8a854
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 0.9985

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://irlanc.ru/uplcv?utm_term=yify+online+movie+streaming PDF link annotation
    • https://dianthusindustrial.com/resimler/files/36702613463.pdfIn PDF document text
    • https://ovistar-dz.com/ckfinder/userfiles/files/reduzuvowidokevejowivala.pdfIn PDF document text
    • https://abandassociates.com/ckfinder/userfiles/files/92571665845.pdfIn PDF document text
    • https://upaspor.com/resimler/files/wotidero.pdfIn PDF document text
    • http://spain-ex.com/images/blog/file/27312030044.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/tst7lnonpr3sigck2pf5fk946q/56948349346.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/82547776296.pdfIn PDF document text
    • http://hakanhurdacilik.com/userfiles/file/zifubijunukudevisipebu.pdfIn PDF document text
    • http://5mal4.de/moneyvidya/web/images/userfiles/file/sitoxafirel.pdfIn PDF document text
    • http://fields-on-earth.com/images/blog/file/89634609110.pdfIn PDF document text
    • http://universalgroupautos.com/files/others/gapisezepifof.pdfIn PDF document text
    • https://windfreeklima.com/upload/ckfinder/files/36478261223.pdfIn PDF document text
    • http://ccsilver.kr/files/fckeditor/file/198019589961319400a99af.pdfIn PDF document text
    • http://waxiangyuan.com/upload_fck/file/2021-9-9/20210909195403945686.pdfIn PDF document text
    • http://edituj.cz/res/file/vipozeritukenakasojaxij.pdfIn PDF document text
    • http://palakkadtourism.in/ckfinder/userfiles/files/jelitogilojifuxinef.pdfIn PDF document text
    • http://ramenzoni.eu/userfiles/files/15692590311.pdfIn PDF document text
    • https://flims.atelierleuthold.ch/userfiles/files/4676539303.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/87f2bcddbd1eae671cf37b7ab99d61c8/muzefazatolaworex.pdfIn PDF document text
    • http://aromacosmetics.bg/assets/userfiles/file/masuf.pdfIn PDF document text
    • http://fxlcd.com/upload/file/folidede.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_off0000d4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D4 17188 bytes
SHA-256: 9fa6b98820e89fb31f2a340bab921daa963501dca89c8b3064bd7be1f83837fd
font_01_sfnt_off000100c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000118e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E0 10720 bytes
SHA-256: 7f123bc8d76241de5290bf1cca6f0a6896424151dd85472160157d2bb3626703

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