Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e2e466140464d1…

MALICIOUS

PDF

95.7 KB Created: 2021-07-21 23:24:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 240c7f17a5e71c335a6b923bf1f6123f SHA-1: bd6c47ec341a5cd5c155de7bd849c3363e0cf905 SHA-256: 02e2e466140464d11b09a395ea526b1afe980882b063736ccf45a0d6e73992c3
156 Risk Score

Malware Insights

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

The PDF was flagged by ML and ClamAV as malicious, exhibiting characteristics of a link farm hosted on compromised CMS uploads. The embedded URLs point to various domains, many of which are likely compromised, suggesting an attempt to distribute malicious content or phishing lures. No scripts were extracted, but the structure and heuristic firings strongly indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://kondicionery-domodedovo.ru/upload_picture/file/ropobigufedusa.pdf In PDF document text
    • http://altinay-law.com/images/file/vopogikifipowexivotome.pdfIn PDF document text
    • http://thebaileyfamilyreunion.com/clients/6/6f/6f45d7e5c9279c15d0bd3a3fa6949618/File/2640936064.pdfIn PDF document text
    • https://mcq-exambd.com/app/webroot/ckfinder/userfiles/files/12156371235.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b48427a01bc---63814238836.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/knnndt85b5rd6gj0c3db17jvm5/xexumujefitiwemisuvak.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609801a0d68c1---98123892889.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/vovibuwukozefowowujaxoxa.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/satebudalebakapato.pdfIn PDF document text
    • https://tyko.pl/userfiles/file/lipazavobefupezi.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/39ab57a20c4a736aa8e0db6e663c1f65/bofapapedifurupi.pdfIn PDF document text
    • http://ideviceplus.be/app/webroot/files/userfiles/files/fepetenef.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/jeviw.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/ep8qsm4vm3qa0vefdfv6kn99fb/48749692314.pdfIn PDF document text
    • http://fluidearthconcrete.com/userfiles/file/dajavikerazir.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/f3eac4372e1d42a708bae5360f89e0e9/faromokabunusof.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/66tn9biuldtm94hrjk31g73nfu/9150957173.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/84843914768.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d4251d6f6---surexubufid.pdfIn PDF document text
    • http://weingut-suppan.at/files/98984295398.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a555c6ef747---37551268671.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=vetiver+root+in+malayalamPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/223f07b58d4051b4006d009156905519/64213077799.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_off00011228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11228 18768 bytes
SHA-256: b7848a5058cb7c20c3d2a67c921bcbaa731d9c2a6475a63b126ba0ca19d50fb6
font_01_sfnt_off000143e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143E0 10252 bytes
SHA-256: 3fb808b1529564269f12d266350e76aaadd933ebbdf8a68bad09b0f1a82aba55
font_02_sfnt_off00015ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AE7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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