Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc3275996239de4a…

MALICIOUS

PDF

81.9 KB Created: 2021-07-13 20:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: b9b76fac5e77d68d1f732fe2ff8b03a7 SHA-1: ca251e9de16431801479748b32d099b1ddab336f SHA-256: dc3275996239de4a5cec6975476eeb990d8b4a2de7e33db26a40db38738c3604
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to obscure malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://www.motorradfreunde-toggenburg.ch/up/files/pejeriwoxa.pdf In PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e083928534---gomuboteguw.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a7bda0a67---figaliregur.pdfIn PDF document text
    • http://sahodayabbsr.com/test/fckeditor/file/34599867099.pdfIn PDF document text
    • https://global-brand.net/userfiles/files/55450234959.pdfIn PDF document text
    • http://utuin.net/files/fckeditor/file/vebewoxaxafufosinawizip.pdfIn PDF document text
    • https://poolpoint.be/uploads/file/72814114547.pdfIn PDF document text
    • https://commonwealthsportsawards.com/userfiles/file/ratudegosimawijefaweka.pdfIn PDF document text
    • http://erpsamik.com/ckfinder/userfiles/files/31130320790.pdfIn PDF document text
    • https://aneri12.cz/res/file/99474080149.pdfIn PDF document text
    • http://onlineexpert.in/userfiles/file/xemogigofut.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c6925f7a7ca---wogexovenanivanupuvaliju.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095e34b02f17---73077754180.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccaab29e93---bazodazaxotiviwotivuvol.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608786f97cc9e---tisugufojarevosapixemito.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/5a7a1dcedd50921bb5c3a8fcfad0e46c/16449071965.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/pakogujibefoko.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/091ac8345a16b6cb060f442125ae3910/viwavavefajirifef.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/de9e0b80a6f7a10746f36375aa86b556/vibiperavatemovaruro.pdfIn PDF document text
    • http://brianhaymore.com/images/e/file/45642794439.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/5b778786fb57d985b1b852965db0744d/sakosemoz.pdfIn PDF document text
    • http://fedoro.ru/upload/file/gadejigijenimuripopukakut.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/0udrm7d46oi7oge3g4fba7hb5k/13039796972.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=irs+my+paymentPDF link annotation
    • 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_off0000df48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF48 10220 bytes
SHA-256: d42098f7f96b3aa8229fae888ad14a91a99f20b511194f4f03d51ec94a7cb7c5
font_01_sfnt_off0000f638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF638 16640 bytes
SHA-256: 0a9f4bfb95e9b4cd363d95ad69be2105ee4363a2b09f2e5d459b6fca2f049500
font_02_sfnt_off0001215d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1215D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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