Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa465d72cf87267f…

MALICIOUS

PDF

208.1 KB Created: 2021-08-09 21:07:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: fb7761370b2c4db3fac99b35dc7fe489 SHA-1: 349e98ac6c98ac1284a0223a324f38a49c069ce7 SHA-256: fa465d72cf87267fc37917e5385a93d28fdb19bc781b701b5faf3e1670068cce
162 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing or scam lure. It contains multiple links pointing to compromised CMS uploads and other unknown domains, suggesting an attempt to redirect users to malicious content. The presence of invoice and download button lures further supports the conclusion that this document is designed to trick users into downloading further malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8509

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/84cda4792fa18f0db042c7af8f797202/wivixipanituwav.pdf In PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e20a8140731---kevijogesapowogu.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adfef17ab35---bozebide.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/45al7d34kujeqrla92oj7g1e1d/76932067143.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16095ca385e0a5---22197408587.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/31b5f0b01ffd4ff9770e742a2172bbb4/zamibejiru.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e01b21a08e---36298514079.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/16094c8e9149be---julasefajiwirijojuj.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086f37fd1b2b---95070333432.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/mirurilul.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/nipaz.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/zewasefi.pdfIn PDF document text
    • http://rasmesafar.net/basefile/basefiles/jonelowokepizef.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/19353669904.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/2772462470.pdfIn PDF document text
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/6ee36cdbac338fdcf426f67d36dcbb3c/watodegavulozeganesuze.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/80199200726.pdfIn PDF document text
    • http://stattus.com/assets/file/sokijemaramubesijitaz.pdfIn PDF document text
    • http://turnyras.lt/Files/file/72099302767.pdfIn PDF document text
    • https://walterchiropracticclinic.com/home/walter/public_html/ckfinder/userfiles/files/mulas.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b34b00d93---lixekuwojezuleg.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607581a25f168---vaxuvafoxagobuxusedil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=annual+book+of+astm+standards+2019+pdfPDF 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_off0002cae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002e2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2F3 20060 bytes
SHA-256: 0642944d28b07fe74e27c3f3bdacd47217a35ea0a8c90d725f89a21348969ed9
font_02_sfnt_off000316ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316BA 11208 bytes
SHA-256: 5e9803f621499085bc9a3599d91451b684d684dbbf6b211117998a1982235336

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