Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f28be48f864c417…

MALICIOUS

PDF

90.0 KB Created: 2021-09-13 21:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a9a5ad75ab4f3191073bed460c571633 SHA-1: a8225354b37fc2fcb55a672c05269f8d1c918c4f SHA-256: 3f28be48f864c417eb4b4abac80f0e3f12427d03c66464f941c58dcd53ef97c2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, with numerous embedded URLs pointing to various websites. Several of these URLs are hosted on compromised CMS platforms, indicating a potential phishing or malware distribution scheme. The 'hack wifi termux no root' URL suggests a lure for potentially harmful information or tools.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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 http://krupongs.com/images/file/kigibosavogonazebeg.pdf In PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161393f4cebc33---niwud.pdfIn PDF document text
    • http://cuacuontoanthang.com/media/file/novijivugepedalusujul.pdfIn PDF document text
    • http://dinskayarealty.ru/media/file/37854140618.pdfIn PDF document text
    • https://esofagopisa.it/userfiles/file/85010237780.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/wupofexexitimuwalu.pdfIn PDF document text
    • http://luatkhangthai.vn/upload/fck/file/1936294334.pdfIn PDF document text
    • https://cnn-logistics.com/asset/files/94252112910.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/zisorexusuxidefawilodakuv.pdfIn PDF document text
    • http://gat-asset.com/CKEdit/upload/files/sewigonizidinixojebowejuk.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebc113793e---modugizad.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/warefi.pdfIn PDF document text
    • https://bakwanudang.com/contents/files/44941048578.pdfIn PDF document text
    • http://cheniou.handysociality.com/upload/files/sisapetixoj.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/47438307015.pdfIn PDF document text
    • http://caratow.nl/userfiles/file/59450252954.pdfIn PDF document text
    • http://www.oiseaubleu-promo.fr/userfiles/file/81567367097.pdfIn PDF document text
    • https://questyme.ca/userfiles/file/16488157424.pdfIn PDF document text
    • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/jaberijidafexedifafolitu.pdfIn PDF document text
    • http://consoles-a-gagner.com/fckeditor/userfiles/file/96151821826.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b20ed720b3---12985678437.pdfIn PDF document text
    • http://vncdata.net/app/webroot/uploads/files/14333966653.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=hack+wifi+termux+no+rootPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10144 10652 bytes
SHA-256: 1233ee840a16128ea7449f2070c8e0a39120fc0fbcf2a71f595306bbcfb6b2b5
font_02_sfnt_off000119b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119B5 1868 bytes
SHA-256: b44e304f4199d162c520aa61e4565b27969aa952fa2ee1db3f4cf671ae1a9eb8
font_03_sfnt_off00012268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12268 21768 bytes
SHA-256: a58a5f441a19a47e76b4f4b8c5a16f2f5501dec8be9fc199ac59339e8ee1af38

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