Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd42bbd0cc0ab93…

MALICIOUS

PDF

95.2 KB Created: 2021-06-28 14:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 58624395ed414f0ca5c555bb3bce3fe5 SHA-1: 2d1868f4e5514abf2ef74e37be90f952f9c416f5 SHA-256: 2fd42bbd0cc0ab93451cf0256e0efbe73700f89d808b7138c9a774e602535d40
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised websites and disposable hosting, likely intended to redirect users to phishing sites or download further malware. The presence of external URIs and link farm heuristics strongly suggests a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://drafthe.ru/uplcv?utm_term=unfurnished+houses+for+rent+in+tipperary+town PDF link annotation
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3663f05d4---64692326680.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/69902968606.pdfIn PDF document text
    • https://pelletier-tp.fr/ckfinder/userfiles/files/luxoxapededuxiferij.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4f4c61ca2---vamedusowatexi.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/jujulelijajunew.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b87acbd9aff---vizotulafu.pdfIn PDF document text
    • https://quaint-house.com/zilaxojexojipaj.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082c260e9801---96441524760.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/34420199363.pdfIn PDF document text
    • http://forglass.sk/userfiles/file/bejokukugulepuxabigete.pdfIn PDF document text
    • https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/2aa9227bfe687e900ead5f375f98be4e/lujalafamutulegurutaf.pdfIn PDF document text
    • https://bayihoki99.com/contents//files/2061958357.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6d24b22e1---weriwuxarip.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8e36337db---warinasoxezopun.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/c084600ba932a776844312c42146a096/21208309577.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160966fbfd446f---75343630507.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea9f5d4d56---68810535951.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9483edca01---dejavodarafexejatebena.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ae77b7334---96828691417.pdfIn PDF document text
    • http://ourdesign.hk/ckfinder/userfiles/files/15488511850.pdfIn PDF document text
    • http://envigest.cz/upload/file/29201941970.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/78973453996.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/3e5de8093a9eccaa486487d32f3d2c72/tavufanibateludekovutake.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/jugexevasazobotuvejatezug.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5cee6281---segoralanitutoxax.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_off00011154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11154 10856 bytes
SHA-256: 54237d94ca086ad28f24335b5fb1e4e50575276f99dd1395c8248e7435f6bf89
font_01_sfnt_off00012a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14280 17156 bytes
SHA-256: 1f1b985eda946a7f78414accf338be97e1310477cbe8d990c887fe9bb4b022eb

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