Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2bc80581f34468…

MALICIOUS

PDF

77.3 KB Created: 2021-09-09 03:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 317b031aa3afa0a135644021e0c456fe SHA-1: e30b3bbc87ca3c764846bef0c162d637f0db23f7 SHA-256: 7e2bc80581f344682dff8aabad7cd505011b482969fc3eff34360b791e1a53f5
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, suggesting it's designed to redirect users to potentially harmful websites. The presence of JavaScript points to an attempt to exploit vulnerabilities or deliver further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=pokemon+fire+red+cheats+for+rare+candy PDF link annotation
    • http://sochi-polyana.com/ckfinder/userfiles/files/tovilamobiduwuwaf.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/4masig1314s4eipdlv3jh27p2h/zusinezunijasox.pdfIn PDF document text
    • http://agilesolutions.in/uploads/zedigodinatuwoluvevejeg.pdfIn PDF document text
    • http://poongdung.com/FileData/ckfinder/files/20210903_AA93674AF311C4D8.pdfIn PDF document text
    • http://thietkewebbacninh.com/webroot/img/files/gawixebuvolap.pdfIn PDF document text
    • http://stagelight.pl/userfiles/files/wazovosexumugamaxatebedon.pdfIn PDF document text
    • http://sitarofindiamd.com/userfiles/file/sikugegujavadugatekijaga.pdfIn PDF document text
    • http://go-pxl.com/uploads/files/nikoke.pdfIn PDF document text
    • https://birgatour.mn/js/ckfinder/userfiles/files/94462145580.pdfIn PDF document text
    • http://capriololaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/11392552724.pdfIn PDF document text
    • http://cee1968.com/ckfinder/userfiles/files/37141632288.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/sikunezigujivonaleze.pdfIn PDF document text
    • http://sten.kr/club/data/userfiles/file/20210903113024.pdfIn PDF document text
    • http://nawooelcs.com/upload/userfiles/2021/09/files/210902025015.pdfIn PDF document text
    • http://epoptavky.com/is/images/FCKeditor/File/9300341676.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/161394fef90bd3---2639718682.pdfIn PDF document text
    • https://csn-alliance.com/data/files/karejigumupituzalulelivuf.pdfIn PDF document text
    • http://technoauto.jp/js/upload/files/3987139983.pdfIn PDF document text
    • https://5udua.com/contents/files/luximewenasajasuz.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/18238747537.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_off0000c6bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ded3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED3 10904 bytes
SHA-256: 22ee0fec8daf49b0b0ba20006fe9620ce50129f535e8cc6016dc9b3b3dc02403
font_02_sfnt_off0000f7eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EB 18480 bytes
SHA-256: 7212d588927871e2660f75afd840db334a724404bf037ad8ce4267583fed121c

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