Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a02cacefb1c04a9…

MALICIOUS

PDF

82.8 KB Created: 2021-09-15 09:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e75f8ddd28ea2061693661c604ce3e5c SHA-1: c74d3de7d90fcbd1db89c9891f1bbcb76bb376d6 SHA-256: 9a02cacefb1c04a97422b3893cb6e1d8df4d9cc06b4da536951f2b30538eb5bd
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to redirect users to malicious sites or download further payloads. The document body is heavily obfuscated, but heuristics indicate it functions as a link farm, with many URLs pointing to compromised websites. These links likely serve as a lure to download malicious files, aligning with phishing and malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161394402222e2---24661365537.pdf In PDF document text
    • http://savvyais.com/userfiles/file/vimebakofavamam.pdfIn PDF document text
    • https://jackinthegym.com/uploads/files/202109110751012396.pdfIn PDF document text
    • http://edituj.cz/res/file/66566859464.pdfIn PDF document text
    • https://ytdrive.com/CKEdit/upload/files/pasegijonatomuvukex.pdfIn PDF document text
    • http://huh.hu/UserFiles/File/1096115461.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/c54b747c5d26abbce5fc1e93051c6ce1/83915435287.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614139fdec8f7---25136421704.pdfIn PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/69663605615.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/27399778356.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613b8ce7708fe---84561884224.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e9b0b14ecb---26009995426.pdfIn PDF document text
    • http://bibliotekaszamocin.pl/img/upload/files/36051766657.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/getonezojipi.pdfIn PDF document text
    • http://plise.org/userfiles/file/noropezudavugafobezezirob.pdfIn PDF document text
    • https://minervatech.work/js/ckfinder/userfiles/files/70536220768.pdfIn PDF document text
    • http://lexxyin.net/files/fckeditor/file/81822263805.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/6s4d05bt66p9g9r8a84n4psnrb/32793188689.pdfIn PDF document text
    • http://thefarmatarapahoecounty.com/userimages/22500010612.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613d4621dd232---kenegerafosijawaj.pdfIn PDF document text
    • https://noithatkuongthinh.com/uploads/files/suled.pdfIn PDF document text
    • http://gapp.fr/medias/files/82052059576.pdfIn PDF document text
    • https://didacostruzioni.it/userfiles/file/82272813754.pdfIn PDF document text
    • http://wienbildarchiv.com/upload_files/files/25223853034.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/9796c45b23e3eebf2c149adb5254c398/91635853592.pdfIn PDF document text
    • http://sghr.ca/upload/ckfinder/files/pekumowivuvozakat.pdfIn PDF document text
    • http://africanhairbraidingsalon.com/userfiles/file/tobugimexavatekutopakodu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=agatha+christie+dumb+witness+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_off0000dd3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF556 11208 bytes
SHA-256: 806693fd63bf1f645fb4000df24024b47802564656c3b967a4bce3f8588eae3c
font_02_sfnt_off00010f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F14 17952 bytes
SHA-256: 99b7a4e2967777f1ddfae7b240653bd4de7300cd47f98e2ad95929ff1fee7059

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