Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3e0cfe062bd97b…

MALICIOUS

PDF

69.1 KB Created: 2021-09-26 02:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 74dd8527d149485a796aa1c621f52729 SHA-1: 23107f2d9ff232acfc685c5a53264cbb326f31a8 SHA-256: fc3e0cfe062bd97b5cfa93f63d060c64ae554a415ad3c7d19fc40057422f12cd
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links to external websites, many of which are hosted on compromised or disposable domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://konberdbio.com/upload/files/pafanedamarikewopo.pdf In PDF document text
    • http://vita24h.com/uploads/userfiles/file/88236883003.pdfIn PDF document text
    • http://vividconcept.in/userfiles/file/veravakuno.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/poxebatud.pdfIn PDF document text
    • http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/napokir.pdfIn PDF document text
    • http://wakesup.org/userfiles/file/joketeluzulagokutoj.pdfIn PDF document text
    • https://fotojursa.cz/userfiles/file/rizitilasixesu.pdfIn PDF document text
    • http://arenda-v-novosibirske.ru/ckfinder/userfiles/files/85167930837.pdfIn PDF document text
    • http://kronospan-mofa-hungary.hu/editor_up/nukolowoxarezadedaxaf.pdfIn PDF document text
    • http://valencia.thepokeluau.com/uploads/files/93951571068.pdfIn PDF document text
    • http://www.itidharamshala.in/images/uploads/files/32607722180.pdfIn PDF document text
    • https://aviatroglo.fr/IMG/file/10154010305.pdfIn PDF document text
    • http://shangrilatheshow.com/ckfinder/userfiles/files/65731955945.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/kesewoma.pdfIn PDF document text
    • http://titibbs.xyz/js/ckfinder/userfiles/files/volej.pdfIn PDF document text
    • http://belean.pl/userfiles/file/63416175620.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d893b88742---7555046174.pdfIn PDF document text
    • http://v-lukomorie.com/uploader/files/8556619243.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/afe5088081376d1a5754565a9761c7fd/78401463838.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/5db1ca9f07495c0d3d383dee2be3a8de/riteridagufaje.pdfIn PDF document text
    • http://drairtools.com/ckfinder/userfiles/files/bapivopimirajanebi.pdfIn PDF document text
    • http://spodne-pradlo-2bpoint.sk/UserFiles/File/mufatujutovul.pdfIn PDF document text
    • http://isleford.com/filespath/files/20210912115425.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161354897220f7---82514366465.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=android+multi+display+supportPDF 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_off0000afb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB7 10616 bytes
SHA-256: d6c1f919dbfbf416d453a828ac827b7fdf2ccdea728277743ca4a9e8b040adb5
font_01_sfnt_off0000c800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC800 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE012 15340 bytes
SHA-256: 2e784cd407682efd30423ef9521cd822610de3ffe666ee45fff4c70546490640

Open this report in the interactive analyzer, or submit your own file for analysis.