Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7d4623be77f108…

MALICIOUS

PDF

214.9 KB Created: 2021-09-03 02:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4e40aed88ff9b8b3395b2e810165af8b SHA-1: 57402187c4b11673d392a3d0e0de6b8251b056c4 SHA-256: 9f7d4623be77f1086dc396ae91847f61a47ffde62aca742609c7300779112afc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The presence of a 'Password-protected archive handoff' heuristic suggests the document is designed to trick users into believing they need a password to access an archive, likely to bypass security scans. Multiple URLs pointing to compromised CMS uploads and other unknown domains further support a malicious intent to distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9747

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a029c1ce242---84927573202.pdf In PDF document text
    • http://seibyou-koujien.com/files/files/43534468423.pdfIn PDF document text
    • https://ctsgroups.asia/images/file/11324626454.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c14920c3d41---31203847798.pdfIn PDF document text
    • https://kermanrooz.com/img/files/fesadijom.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e007d23773---fufipob.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7m9ke4u0l4lu96r04fe5hgv6v7/potevusopipomevipuzolod.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/15578329366.pdfIn PDF document text
    • http://sarica.com.tr/ckfinder/userfiles/files/77546612579.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/1611b752856053---91388620921.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a71eef2c88d---73865933052.pdfIn PDF document text
    • http://taniaandjohn.com/clients/874109/File/xidumejinemekix.pdfIn PDF document text
    • http://glovimex.com/uploads/ckfinder/files/sogagunipugawovuretidofud.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16071ba3ea89fc---52122918566.pdfIn PDF document text
    • https://freebcard.com/ckfinder/userfiles/files/xatukekemedewalowobus.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608889a67456f---pomulaj.pdfIn PDF document text
    • http://ceramkgres.ru/userfiles/file/50124509624.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b2bc821baf2---42912191208.pdfIn PDF document text
    • http://kuppersbusch-center.ru/uploads/files/75844759825.pdfIn PDF document text
    • http://efuturesthai.com/uploads/file/85192721225.pdfIn PDF document text
    • http://geobigoni.it/userfiles/files/20600433750.pdfIn PDF document text
    • https://prestinieurope.ch/userfiles/files/78165065935.pdfIn PDF document text
    • http://cocoal.com/uploads/file/13223652486.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160a455dc1bc20---60512645865.pdfIn PDF document text
    • http://tv-sat.cz/userfiles/file/40394381334.pdfIn PDF document text
    • http://fotossc.pl/_files/file/51571314419.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=manual+epson+l5190+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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002e299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E299 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002fab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAB0 10768 bytes
SHA-256: bffc24f4a6100fc5519d860c991cbe7135eae8bd3d6a69ea49816cebfdc66dc3
font_02_sfnt_off0003139f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3139F 22660 bytes
SHA-256: f19c96f1342029f52837cd7e648f140b5fdeb59ea6be56674fe9898acc26303d

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