Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3c6f160878fa2d…

MALICIOUS

PDF

89.5 KB Created: 2021-09-06 15:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 51f225bd2f1577f74d22962d98cce1f1 SHA-1: d5d7118430de933f6e48d1f06042961edd22e1fb SHA-256: fc3c6f160878fa2d0c8f66f93775825a4fb9ff6bec749661347c8d8dcb092b2b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, detecting it as a phishing trojan. The document functions as a link farm, containing numerous URLs that point to compromised websites, many of which are WordPress installations hosting PDF files. These links are likely intended to lure users into downloading further malicious content or visiting phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://medvor.ru/uplcv?utm_term=cricket+rules+pdf+file PDF link annotation
    • https://tortugafilms.ca/adminfiles/file/bapoboguba.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16076a639b47ad---92578475971.pdfIn PDF document text
    • https://85097781.com/upload/files/41765122976.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825a63dbe2a---bulafesar.pdfIn PDF document text
    • http://frangarcia.eu/upload/file/2848220691.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/1e3ed229ea0c872289465d3a6eea566c/76597263874.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/1425dd6a399baf79cea18735d4998404/vimejitisiwepane.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1610ec49c0aac6---dilabumak.pdfIn PDF document text
    • https://red-adlay.com/upload/files/53622328192.pdfIn PDF document text
    • http://pixel-pro.ru/upload/file/10289073803.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/s7s96tjqd5hcd3j3bicjehj7pm/82436624878.pdfIn PDF document text
    • http://eot.mn/uploads/userfiles/files/vujitofigajasomizux.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/remogefivavusesomud.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/59147389400.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a773aa4b7---48425607917.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/52510413423.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/ojnapstrho2j15qo3q7n4hjqg3/navedavedotuvumezuz.pdfIn PDF document text
    • http://moonlightmontessori.com/upload/files/60827680888.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/4urg5tdofjdqjki4cs6956ugn5/damimawisa.pdfIn PDF document text
    • http://askaudit.ru/price/15459716227.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/47391954791.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/kifafawagarotasorinobetu.pdfIn PDF document text
    • http://hanabi-la.com/uploads/files/salenumideko.pdfIn PDF document text
    • https://emprenderem.cl/files/tijafasaxikepamoma.pdfIn PDF document text
    • http://taiwanglassgroup.cn/userfiles/file/zarexevuwu.pdfIn PDF document text
    • http://tourhong.com/FileData/ckfinder/files/20210821_F666D29A692936FA.pdfIn PDF document text
    • 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_off0000fa35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11247 17908 bytes
SHA-256: a5e545564cb0a589f8f8acf111cef1371a733d65bbe99b57b6823638cfd56da1
font_02_sfnt_off000140b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140B1 10448 bytes
SHA-256: e20cca6d8cd7b750e85f0f1e91722054c537503b4fd590f6e839f48dbdfd6cb1

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