Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6061f50c5e64a16…

MALICIOUS

PDF

71.7 KB Created: 2021-09-30 15:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: a243fd030c832ccaa0e69a92f326b99d SHA-1: 283f5d3838e14ce0bdc3a5fa8a027e6be8d8e511 SHA-256: d6061f50c5e64a168dcff182a1ff445e241866407a192b4829928939b58a8b8a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, suggesting a phishing or redirection attempt. While no scripts were explicitly extracted, the nature of the embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://artistprasanna.com/userfiles/file/26696910220.pdf In PDF document text
    • http://cegled.varosom.hu/userfiles/files/fugefamarerena.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/zewukugo.pdfIn PDF document text
    • http://arqing.es/ckfinder/userfiles/files/nexikilowuboxe.pdfIn PDF document text
    • http://dbcasagayathottam.org/assets/uploads/cms_images/files/35631099475.pdfIn PDF document text
    • http://swaving-stalinrichting.nl/ckfinder/userfiles/files/77592991462.pdfIn PDF document text
    • https://qpshouse.com/upload/image/file/xelodalimejewel.pdfIn PDF document text
    • http://bfttacg.marketsearching.com/upload/files/fitevarole.pdfIn PDF document text
    • http://105chers.netsociality.com/upload/files/53337670065.pdfIn PDF document text
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/sobawuram.pdfIn PDF document text
    • http://cartopack.com/Images/file/89464436321.pdfIn PDF document text
    • http://inistor.com/ufiles/files/70140828052.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/de89e8d68ff290cec4c20d86e2ad9ce1/worinosirugeretilo.pdfIn PDF document text
    • http://pandoraecza.com/genelresimler/file/venitojoxelesuvukejudal.pdfIn PDF document text
    • http://laboratoriologos.it/userfiles/files/wirasufa.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/file/tupawowekubonexivo.pdfIn PDF document text
    • https://tsafar.ir/basefile/tsafarir/files/zuzuzexoxupewinanexo.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/86316342559.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/xukokapal.pdfIn PDF document text
    • http://cambresisemploi.fr/ckfinder/userfiles/files/86398325946.pdfIn PDF document text
    • http://xn--aknmedical-yub.com/uploads/file/fokijavabadiposa.pdfIn PDF document text
    • http://xn--80aaaghhaztbcd1agjgbccsgfftf.xn--p1ai/pict/file/45533457570.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614edf85a0f69---vigaleziwazo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=hell+on+wheels+123moviesPDF 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_off0000b497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB497 10500 bytes
SHA-256: 655cc393cbc0559b206c2277bc92c7421c1460e96a04534fa3c8a6fad951683a
font_01_sfnt_off0000cc5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE470 16916 bytes
SHA-256: 8daf69aa988ba04d6e5d8e17e3e5c31b43d72db316f2960279709a75acd68898

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