Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08450062d82667b…

MALICIOUS

PDF

94.3 KB Created: 2021-09-13 07:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9f7201a8d80c6a6bf7635d26bce05357 SHA-1: 0805c4807292e49488da5cce28233ebd0d88ff73 SHA-256: d08450062d82667b1a60809a2687f56f68384c3ba9d791ea0ff4f360a4ef56d5
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV with a critical heuristic, indicating it is a Pdf.Phishing.Trojan. Static analysis reveals numerous embedded URLs pointing to disposable hosting, characteristic of a link farm. The PDF's structure and the presence of many external URIs suggest it's designed to redirect users to potentially malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1206

Heuristics 4

  • 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 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
  • 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://allytemp.ru/uplcv?utm_term=world+score+winning+eleven+2012 PDF link annotation
    • https://resttour.com/images/userfiles/files/76383658373.pdfIn PDF document text
    • http://wmasgroup.com/userfiles/file/86287456362.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/24792cee5b30acfe56880f351ed7d6b6/11181739471.pdfIn PDF document text
    • http://karpatskiles.ru/store/files/95475278391.pdfIn PDF document text
    • http://sportschoolindex.nl/images/uploads/36060977891.pdfIn PDF document text
    • https://shriramsteels.in/public/ckfinder/userfiles/files/77289678307.pdfIn PDF document text
    • http://suspensionestg.mx/userfiles/file/mamuboditotosinogamimuri.pdfIn PDF document text
    • https://recapress.com/ckfinder/userfiles/files/kususefufazefel.pdfIn PDF document text
    • https://www.idd.no/ckfinder/userfiles/files/dikipotaduniditomubi.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/sodivulilug.pdfIn PDF document text
    • http://ducthoaudio.com/upload/files/14368795990.pdfIn PDF document text
    • https://grnca.org/img/files/files/67663292125.pdfIn PDF document text
    • http://ruihuitax.com/files/file/10973970990.pdfIn PDF document text
    • http://chip-chup.hu/upload/file/36192885424.pdfIn PDF document text
    • http://1careglobal.com/upload/files/gugatofu.pdfIn PDF document text
    • https://sealskinz.ru/files/file/12429208700.pdfIn PDF document text
    • http://dichvutheapec.com/upload/FCK/file/2012410390.pdfIn PDF document text
    • http://www.facyt.com.ar/ckfinder/userfiles/files/98491029073.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/taratog.pdfIn PDF document text
    • http://artospace.com/pics/file/58651881837.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/20822178980.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/pebati.pdfIn PDF document text
    • https://yp05.com/_UploadFile/Images/file/39940677484.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16136a856410ff---93113991088.pdfIn PDF document text
    • https://leresto-niort.fr/images/userfiles/files/xuxomivoramubutuzipu.pdfIn PDF document text
    • https://haidangpc.com/contents/files/mafonuteletapetid.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001247d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1247D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8F 18648 bytes
SHA-256: 7065097e178be78465e30d7f7ed8207ca09bdf0fa55c488521a33fb41777ee2a

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