Malicious PDF — malware analysis report

Static analysis result for SHA-256 d560f2ce05ed71fd…

MALICIOUS

PDF

68.2 KB Created: 2021-09-26 08:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 5f2480d4dedaef587b96770a63f0e69e SHA-1: db2fb2d0bdf10b22a665504ef91208599cf64fde SHA-256: d560f2ce05ed71fd9f0b2d362fae06d3c43002ef480ed82b09fd06fde782f87c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high number of embedded links pointing to various domains, many of which are flagged as disposable or part of a link farm. This behavior, combined with ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests a phishing or malware distribution campaign. The ML classifier also flagged the PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=panda+launcher+apk PDF link annotation
    • https://thaibamboorestaurant.ca/phpsites/bard_ford/uploads/file/tomumuruwa.pdfIn PDF document text
    • https://aashianarealty.com/file/23052554472.pdfIn PDF document text
    • http://pune-india.info/userfiles/file/fidono.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2021-9-6/20210906032119665453.pdfIn PDF document text
    • http://vitacanes.com/uploads/files/vuxunawatipebanekedufi.pdfIn PDF document text
    • http://srub-servis.ru/userfiles/file/27619060229.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161376743db55b---wopajetopirodizib.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/files/kolujivegoxobena.pdfIn PDF document text
    • http://ketnoikienthuc.com/upload/files/37648046868.pdfIn PDF document text
    • http://electrogalicia.com/electrogalicia/recursos/archivos/83127358744.pdfIn PDF document text
    • http://summitremodelinginc.com/userfiles/files/nomudexare.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/sugubofenokilapufom.pdfIn PDF document text
    • https://www.wemservice.com/ckfinder/userfiles/files/bekefaz.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/18225128213.pdfIn PDF document text
    • http://halanmilk.com/upload/files/75881307167.pdfIn PDF document text
    • https://www.blondel-bois.fr/ckfinder/userfiles/files/28945302482.pdfIn PDF document text
    • http://erbaytag.com/resimler/files/54693533016.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613dcbd34879e---zuwalomapesuxegemenus.pdfIn PDF document text
    • http://meubelenindex.nl/images/uploads/68714494019.pdfIn PDF document text
    • https://10glazsikeyrosa.ru/file/64059288081.pdfIn PDF document text
    • http://andreaslasnik.com/data/files/26796102123.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/19215929564.pdfIn PDF document text
    • http://xn--m1age8bh.xn--p1ai/files/file/66397463771.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_off0000ad65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD65 15308 bytes
SHA-256: 9a71bb20b4496a9219361925cd0a641cd392658293e73bcfd06367495ad801a8
font_01_sfnt_off0000d458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD458 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6F 10328 bytes
SHA-256: 15b3f3843ece700c8fcbd2bcd1d70d6cd2ef9be105dca600dfbb251dcaad742f

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