Malicious PDF — malware analysis report

Static analysis result for SHA-256 480f7d2608a99c7e…

MALICIOUS

PDF

73.0 KB Created: 2021-09-30 11:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e5d4c5d4db21ef8b4fe7440b919880f9 SHA-1: ad3d75f02f95b21cd8b8fd422f9f99ce1581c591 SHA-256: 480f7d2608a99c7e64ec72e6c294c910cc9d7a014a6d14ecebbe527573ea4d4a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript and a link farm pointing to multiple compromised websites, suggesting an attempt to redirect users to malicious content or download further payloads. The presence of JavaScript indicates potential for exploitation or malicious scripting execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 https://hensuyenpqa.traigiongthuha.com/ckfinder/userfiles/files/nukunek.pdf In PDF document text
    • http://air-con.ru/upload/files/migawenodevasureriwulewu.pdfIn PDF document text
    • https://ihotel2b.com/upfiles/editor/files/duvemisalo.pdfIn PDF document text
    • http://brezov-gaj.si/uporabnik/file/fidabuzegaduxej.pdfIn PDF document text
    • https://pomacanthe-art.fr/imagebeforeafter/files/wazuzusavasabowufuxuratoj.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/c20b0b6c60f7cbc73fc7e83f59a458ba/38383711061.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210928072022.pdfIn PDF document text
    • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/39413856474.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613a1491cf003---94480764159.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/70706663234.pdfIn PDF document text
    • http://ddservice-bmw.pl/userfiles/file/sikezukubamaletuxareji.pdfIn PDF document text
    • https://fleschimmo.lu/userfiles/files/mapoxubifaxuniduzoraxi.pdfIn PDF document text
    • http://stroi-sistema.ru/img/vopofuwosado.pdfIn PDF document text
    • http://stickers-moins-cher.com/userfiles/stickers-moins-cher.com/file/94478254920.pdfIn PDF document text
    • http://bong-dem-long.org/upload/editor/files/25145133763.pdfIn PDF document text
    • https://vnjhanoi.com/upload/files/vodilalu.pdfIn PDF document text
    • http://szzxwx.com/Upload/Upload/file/2021925828538663.pdfIn PDF document text
    • http://atya.eu/files/file/kudamifoguwaxibibeb.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/xefubajumalanaxa.pdfIn PDF document text
    • http://startmatbaa.com/userfiles/file/34882145212.pdfIn PDF document text
    • http://kam-era-man.com/85667896054.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161516f99d15ed---dovenukozawebufere.pdfIn PDF document text
    • http://hyeminshop.com/DATA/files/15465063742.pdfIn PDF document text
    • https://telorgabus.com/contents/files/bowavatatoziganitason.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=how+to+mix+colors+to+make+purplePDF 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_off0000b63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB63B 17632 bytes
SHA-256: 224079c96be0a9309a677c11e2fc7f8ebca8bdc9f151e6c37d8181ef40c75077
font_01_sfnt_off0000e336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE336 10804 bytes
SHA-256: 840e3aba01c6c8ec9e99cd34a7b7b0cccce27a3bb0b9e10104f9a0022fc60c83
font_02_sfnt_off0000fc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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