Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2faabd206a1e7d9…

MALICIOUS

PDF

73.5 KB Created: 2021-09-29 07:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: ee85315e6d26d9bfd962d2d5982c3b17 SHA-1: d48d4bcffba01a7ca90b41bb08607865e6a75aa3 SHA-256: e2faabd206a1e7d9ed1a05f6bf99ce7a69221ff1603b7b3b257bb8c7b6643ed4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. While no scripts were explicitly extracted, the nature of the links and the detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 https://glbtrader.com/userfiles/file/wajukejuloza.pdf In PDF document text
    • http://chamdure.com/DATA/files/fofujanunofetoxubal.pdfIn PDF document text
    • http://tcgardening.com/userfiles/file/2021091005045073499.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161316de9879d5---95714076221.pdfIn PDF document text
    • http://centreforeffectivecoaching.com/media/file/14331567823.pdfIn PDF document text
    • https://isosklo.cz/uploads/xofumumuzami.pdfIn PDF document text
    • https://treasurehunterdetectors.solar-ovens.net/ckfinder/userfiles/files/84274748020.pdfIn PDF document text
    • http://canhtoanland.com/upload/files/71816304757.pdfIn PDF document text
    • http://obasekiestates.com/UserFiles/file/wisowemutojusagijogipowi.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/mllup9opto37un00ertu81tgr7/nidusuvaxesobemipojam.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613998f88b699---lalavenegapugajiwunori.pdfIn PDF document text
    • http://okun.su/upload/file/zopalefip.pdfIn PDF document text
    • http://inteko-tula.ru/f/file/85824090378.pdfIn PDF document text
    • http://onlinepravenconsultant.com/uploads/wysiwyg/files/87016497782.pdfIn PDF document text
    • http://xn--80ab1a9a.xn--p1ai/sadm_files/56370171126.pdfIn PDF document text
    • http://talentfuturesservices.com/sharpinstitute/images/files/83378346913.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1614032b323a6d---kifobexasotedoxunemus.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612eac45b5207---risadoxoderozu.pdfIn PDF document text
    • http://archidaldegan.eu/userfiles/files/23428495696.pdfIn PDF document text
    • http://zenhowell.com/upload/file/xogetarivasikufo.pdfIn PDF document text
    • http://leaders-adv.net/userfiles/file/25572546679.pdfIn PDF document text
    • http://masonhn.com/d/files/10072719099.pdfIn PDF document text
    • http://sxsasa.org/images_fck/file/1632040708.pdfIn PDF document text
    • http://urs-certification.com/gais/image/file/zujetovoniwiwedulusav.pdfIn PDF document text
    • http://xn--80ahcjevtqq.xn--p1ai/ckfinder/userfiles/files/vetumunowup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=touchgrind+skate+2+mod+apk+iosPDF 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_off0000b485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB485 18872 bytes
SHA-256: e062c3a9b552385deabc23a62c427a524faadda65ae0c860c71754a677dc124b
font_01_sfnt_off0000e524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE524 11192 bytes
SHA-256: 754198cc37671c00dc741496c61fc740894991fb0749aa64090e1d4b8856ed14
font_02_sfnt_off0000ff0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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