Malicious PDF — malware analysis report

Static analysis result for SHA-256 172abd9c152666ee…

MALICIOUS

PDF

91.5 KB Created: 2021-07-18 01:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 240e24be54438c502294c64a77ca54b4 SHA-1: 243871e8eca0aabeb0295d24ff5fc7a26a58b1ad SHA-256: 172abd9c152666ee99e5426004ec66e7f1cebc0a8576c10e799ad7c8a1744001
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous external PDF files hosted on compromised CMS upload storage and disposable hosting. The presence of embedded URLs and the nature of the heuristics suggest the document is intended to redirect users to malicious sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5472

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
  • 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
  • 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://namjapizza.com/app/webroot/files/galewojemurinoxokedaki.pdf In PDF document text
    • https://all-stage-meditation.tw/uploads/files/60dc287819868.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/0e0eb94b8bb09367115e0638592c3c0a/jabipifizogakevasi.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/1c601a41aed70475d585b8b2bba18309/lupetigenuzedilotekip.pdfIn PDF document text
    • http://szymonadamczyk.pl/uploads/fck/file/84066689217.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/7202816243.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c5cb1dc0ffb---20219914759.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2021051910133373499.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/6a7f673614011794da156b733e2a70b9/46108979846.pdfIn PDF document text
    • https://arrayamed.com/userfiles/file/42216998682.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/740d3f58fc36d6ad61468988124d6b95/kukabinunedimudegi.pdfIn PDF document text
    • http://firegallery.ru/img/upload/kipalubaxaranom.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bec97f7e680---tugeputuzozis.pdfIn PDF document text
    • http://design-klasse.de/ckfinder/userfiles/files/nifofev.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cde86e032---1500768194.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210515013604.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ce46cc43c7d---pepimox.pdfIn PDF document text
    • http://web-news.eu/www/pkpar/userfiles/file/84235762287.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075cdacadef9---didikokusuzabavav.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16071e67600b6d---72965752287.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=word+whizzle+common+coldPDF link annotation
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/31bc8130df01ffea1882aa0e9132f04d/difemoranazine.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001210b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1210B 16904 bytes
SHA-256: 8db4e68cca8ed235129fe07e5894516113717441b383ea8db9ca3b2e998cf5cf
font_01_sfnt_off00014c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C63 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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