Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6eec492b74ee49…

MALICIOUS

PDF

73.6 KB Created: 2021-09-13 09:53:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0102c65665a620480d38c2c1e83ab43b SHA-1: 4f89d5d52e827b2cdcd34b557fb4daff0b98cf35 SHA-256: 0e6eec492b74ee491caf8d968d98b5119030adf387e001dd97bce680bf768a84
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics strongly suggests a phishing or malware distribution lure. No scripts were extracted, but the overall structure points to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6686

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
  • 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
  • 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://bidadapatidar.com/userfiles/file/37689231766.pdf In PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/12s2c9bp0ogdpag3uq2fdqo8qf/23453347254.pdfIn PDF document text
    • http://podwierzba.eu/ckfinder/userfiles/files/38652472631.pdfIn PDF document text
    • https://bhopalliteraturefestival.com/mpsdp/uploads/files/51014798659.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/161353f0cbbb1d---sodibubadojifipekavokilol.pdfIn PDF document text
    • http://kiajihlava.cz/UserFiles/File/25047483331.pdfIn PDF document text
    • http://richmore.kr/uploadfile/fckeditor/file/sixutisarudujajokipepit.pdfIn PDF document text
    • https://mtmhomeschool4art.com/mycms/uploadedimages/editorUploadedImages/file/41277299102.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/66650181698.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/vezevubebu.pdfIn PDF document text
    • http://mvpbuilding.com/userfiles/file/wejagizofadoxa.pdfIn PDF document text
    • http://thietbiotoviet.com/Images_upload/files/puzakanitavutesufate.pdfIn PDF document text
    • http://audyt.rowerowaszkola.pl/imgturysta/files/32476960510.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/bovadurigidiz.pdfIn PDF document text
    • http://bjbtrh.com/files/pic/file/posurosizafiwaximix.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/87750217382.pdfIn PDF document text
    • http://cck-brno.cz/ckfinder/userfiles/files/modifutiroxeko.pdfIn PDF document text
    • https://copperscrap.wasteequipment.net/ckfinder/userfiles/files/kirovidebevejagimuv.pdfIn PDF document text
    • http://lpc2529.com/piceditor/file/tanoxajobosojema.pdfIn PDF document text
    • https://adtw1.com/ckfinder/userfiles/files/85855113377.pdfIn PDF document text
    • https://regiefranchet.fr/userfiles/files/56373493862.pdfIn PDF document text
    • https://bhandarisurgical.com/ckfinder/userfiles/files/luzamaja.pdfIn PDF document text
    • http://xn----8sbemnkjd7bfu.xn--p1ai/design/img/upload/file/59967226137.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131a0e0b86a1---97715797516.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/1502b7ae187284612da67c777e009dc7/75708241209.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+set+up+email+on+my+android+phonePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18E 17708 bytes
SHA-256: 75c14c207a0a028475f8fe0f2aaef2c89fb4a76f296465156802558000f7a540

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