Malicious PDF — malware analysis report

Static analysis result for SHA-256 2647358b694fb09f…

MALICIOUS

PDF

89.2 KB Created: 2021-07-29 23:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: dc070cca766f64f0faa1db1a7fdd6b38 SHA-1: 969819ef5e433f595b344faef024c5413c92a5a9 SHA-256: 2647358b694fb09f2b62956af4c04e51496b38fbc6d1b96e7bb518fa5efa1a75
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal Application Data

This PDF document is classified as malicious and exhibits characteristics of a credential phishing lure, specifically targeting MFA or one-time code harvesting. The document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to distribute malicious content or collect user credentials. While no scripts were explicitly extracted, the presence of PDF_URI and SE_MFA_LURE heuristics strongly indicates a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://richmore.kr/uploadfile/fckeditor/file/40563583633.pdf In PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ee6a72e12e8c01a5e930073ba325faf8/paweno.pdfIn PDF document text
    • https://alice-immo.com/userfiles/file/21458113967.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ab6e5e361dd---fenexaboze.pdfIn PDF document text
    • https://truck-diagnostic.ru/wp-content/plugins/super-forms/uploads/php/files/aa5de29015c502aaad8280bb062f208c/17773853150.pdfIn PDF document text
    • https://belitour.ir/basefile/belitourir/files/92254796299.pdfIn PDF document text
    • http://alkanboya.com/files/file///risafo.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076e831d4c42---66916807734.pdfIn PDF document text
    • https://mamap.in/ci/userfiles/files/tumegivevowepowon.pdfIn PDF document text
    • http://eortak.com/img/fck_temp/file/80359020199.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099e38ebe521---satevoxux.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/18715757076.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bec12e9bc10---kimosesawofekewan.pdfIn PDF document text
    • https://xn--faades-mtal-n9a6a.ch/ckfinder/userfiles/files/fevogoweditizu.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/144dd37d0c028aa0866b04324cbce1bd/ruvinafulelozuj.pdfIn PDF document text
    • http://chelseacarpet.com/ckfinder/userfiles/uploads/94371681431.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/63971388274.pdfIn PDF document text
    • http://capitaldanceacademy.com/userfiles/files/zonetiv.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098c83d14116---12096768021.pdfIn PDF document text
    • http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/61767336790.pdfIn PDF document text
    • http://dgjst.com/upfile/file/35424276527.pdfIn PDF document text
    • http://carroll1975.com/clients/4/4e/4e2b018d07aaa5a30c3e4fca1c7a8df7/File/39634840855.pdfIn PDF document text
    • https://guclupin.com/calisma2/files/uploads/zijamenadezure.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/88180329603.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/1l1pnpdusvcf21bgci3408lak2/voxikip.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/fupabipexijowiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=jazz+net+pack+codePDF 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_off0000fa09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001121b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1121B 17280 bytes
SHA-256: 66a103feae5b7e35c24922c60fe81c0f8d16fb49e0dc6cc924c8e03c7bdd37f8
font_02_sfnt_off00013f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F67 10244 bytes
SHA-256: 84db83bd41f68d2e9ebf8e59bc217b9847564c5b7ad734e9e942f95210415007

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