Malicious PDF — malware analysis report

Static analysis result for SHA-256 00bf1290ed11faab…

MALICIOUS

PDF

84.2 KB Created: 2021-09-02 11:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7f966e26b5184b64eb9213885484f45e SHA-1: 2a26bc839c2f6a3241655d4aa15f1d495ddb53f9 SHA-256: 00bf1290ed11faabe7c165456a5d8801a229df06ed14530cb47a55b1f50bf1dc
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document exhibits characteristics of a payment redirection lure, with numerous embedded links pointing to potentially compromised websites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of multiple external URIs and the 'SE_PAYMENT_REDIRECT_LURE' heuristic suggest the document is designed to trick users into visiting malicious sites, likely to steal financial information or redirect payments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://alpanelektrik.com/depo/sayfaresim/file/neputuvafan.pdf In PDF document text
    • http://abwbaltimore.com/uploads/files/9509356127.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/4f21stjgf02ccie0afsaonej72/rininegakuzaligegera.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608aabba061a6---3451540572.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160837ee5b5a5b---gulevatojigisire.pdfIn PDF document text
    • http://thetachikappasigmaalumni.org/clients/5/56/56ac51e2ee760b54d3ff8b7d53c877b7/File/ludimaduf.pdfIn PDF document text
    • http://dulichgiahy.com/upload/file/47593400887.pdfIn PDF document text
    • http://nhatngungoisaoxanh.com/upload/files/vediru.pdfIn PDF document text
    • http://fishtech.org/uploads/userfiles/file/file/vudolizerizot.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/575125e3fcbfff2c717049440eeb45ba/juxuvuga.pdfIn PDF document text
    • http://aroma-es.red/yamituki-n/uploads/files/49321365222.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16072f8d33a667---mexugerav.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/linugulawali.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/xaxiwurube.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e89ef245d---92752929462.pdfIn PDF document text
    • http://hasici-pristroje-eshop.cz/files/file/zadixovop.pdfIn PDF document text
    • http://www.trisad.kz/ckfinder/userfiles/files/kerokusivejudefivixi.pdfIn PDF document text
    • http://balassalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/gojezowot.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/6750165984.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/meg6misokiftecirago5fp1oer/zonipetabibesosofeko.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/b1c725e66aa9a816067b51e392a6e202/tevaravoxavubizufuziko.pdfIn PDF document text
    • https://chandrakantmusicacademy.org/ckfinder/userfiles/files/burilolikuxix.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160941fce41cc3---makivedekipuzomewideku.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/sevadum.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202108211045315921.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=makalah+rekonsiliasi+bank+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_off0000e75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75E 16660 bytes
SHA-256: 1cfdc5247fc8f9fe5f0c4f2ec75e1e7593bc0675cda29ea351a9cfb3535e97ce
font_01_sfnt_off00011265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11265 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7C 10720 bytes
SHA-256: e019a65576e5d89081362f8e0d8bd54f42dcc260ca9ebfce687ce11a191d40d9