Malicious PDF — malware analysis report

Static analysis result for SHA-256 2209d1335ee683cb…

MALICIOUS

PDF

85.7 KB Created: 2021-09-09 18:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: fde3ad8ba2ddd9cc9091b8089c4e2101 SHA-1: 5fa840ccf135fa722c69232d97ddf3c456140d3d SHA-256: 2209d1335ee683cb87a1c41e903f63eb1950ca1b86d2b6932090e246b3a71b43
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malware or phish for credentials. Although no executable scripts were extracted, the presence of numerous URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a pattern of redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bhartiyambeohari.in/userfiles/file/sewuritupesuvemuburunel.pdf In PDF document text
    • http://clinicaveterinariasangiacomo.it/userfiles/files/74262202193.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/3306228b49d2cfbd55805d68b32e056e/88896559337.pdfIn PDF document text
    • https://posaonakosovu.com/ckfinder/userfiles/files/67233675851.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/n4blmj5s88q610208hreooklkf/97620512131.pdfIn PDF document text
    • http://morebricks.com/ckfinder/userfiles/files/53055394935.pdfIn PDF document text
    • https://praktijk-fix.nl/userfiles/image/file/juduliguzavuju.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/3012a9ad1d1502f9c719f20f9808aaf9/6565025354.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/rawufosonosagaba.pdfIn PDF document text
    • http://vaonhaphatphap.com/images/uploads/files/71541797642.pdfIn PDF document text
    • http://onlinepravenconsultant.com/uploads/wysiwyg/files/dedixixavajubaj.pdfIn PDF document text
    • http://niezapominajkowo.eu/userfiles/file/75325091117.pdfIn PDF document text
    • https://svarovanijelinek.cz/ckfinder/userfiles/files/15881057364.pdfIn PDF document text
    • http://fantacyhandicraft.com/userfiles/file/matuxirefowosugiluj.pdfIn PDF document text
    • https://duragloss.pl/userfiles/file/78072496143.pdfIn PDF document text
    • https://rosedreamholidayhomes.com/ckfinder/userfiles/files/17502477593.pdfIn PDF document text
    • https://laurallo.com/ckfinder/userfiles/files/melovapijexo.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612eca71c37c9---17950811534.pdfIn PDF document text
    • http://zbirozskepodzamci.cz/userfiles/59924612094.pdfIn PDF document text
    • https://tarsiman.ee/files/file/kuwutamoziririrov.pdfIn PDF document text
    • http://bighost.vn/uploads/userfiles/file/pupazemamigubajolog.pdfIn PDF document text
    • http://rayanchem.com/d/files/85820203183.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=download+pes+20+offlinePDF 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_off0000e680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE680 19128 bytes
SHA-256: 9fc64371bbe89aec123b0bc3dbee18788befe247c890c421aa882a3e3ba3edec
font_01_sfnt_off0001189a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1189A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000130b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130B1 10624 bytes
SHA-256: 6a84e50a82f40453c38db197e4ee44e60dd48d89ba4fcab7f7ae4da61be3010f

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