Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d1a605c7548da7…

MALICIOUS

PDF

88.7 KB Created: 2021-07-25 23:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 5ebfce04fe596b089f1d5f0659a74781 SHA-1: 11dbab9f4aecdb00e3edd8e1ff4bff7627e9c034 SHA-256: 96d1a605c7548da7a7d08917b98b94fe40485f20c569eb20052a09b58b315a61
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to obscure the ultimate destination. While no scripts were explicitly extracted, the nature of the embedded URLs and the detection as a phishing trojan indicates an attempt to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 https://ajitcoatings.com/uploads/81402904594.pdf In PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607117e3614a6---71915972258.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c61cd5857f5---gaxiduranu.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/vopejawufupejul.pdfIn PDF document text
    • http://apsara.ru/userfiles/file/foragupajop.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16081d6f03fbd5---levuduwupezurotine.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7d8cf3333---pinilijole.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4f4c21c51---fadoxumilewagalubinumabi.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/c26b3bd08f609419e0dd6e8c0341e017/judowexilopajigarukotita.pdfIn PDF document text
    • http://swadeministries.com/pastor-sammy/upload/imagecontent/file/tifixegimobogawubizufapav.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/68566970726.pdfIn PDF document text
    • http://3qbuy.com/CKEdit/upload/files/69162253930.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/39451484224.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/20216101728172803.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/14111194470.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160737ca4cd8d1---21158670682.pdfIn PDF document text
    • http://it-hair.com/userfiles/gereza.pdfIn PDF document text
    • http://timnhanhonline.net/upload/files/pegekuzeza.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/k613nfo4aq7boigbnfonmm1smq/60071285558.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ba125c5aec0---rogoregupoverafatef.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/sild4vaaveq47pl5q7dloiv373/zijimiza.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/95031157305.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f932d8eb4---32732970929.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=10.s%C4%B1n%C4%B1f+co%C4%9Frafya+1.d%C3%B6nem+1.yaz%C4%B1l%C4%B1+sorular%C4%B1+klasik+ve+cevaplar%C4%B1PDF 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_off0000ed7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7B 11752 bytes
SHA-256: c5b83c3f980e9bdbeb0d228bd032d82f253cea382b6a0331955e7ccc5562c824
font_01_sfnt_off000108f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12108 19392 bytes
SHA-256: fb6402c03b718915aab3254e73a776a6e8f74184b3b30d4d9c3509ff05cfd9a8

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