Malicious PDF — malware analysis report

Static analysis result for SHA-256 be028468cfee440a…

MALICIOUS

PDF

81.1 KB Created: 2021-09-16 02:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2b9e6557caf0440e1ac7f1872f6eb482 SHA-1: 87b96b1f3e8a9001d97042a13424b4d167e9b24f SHA-256: be028468cfee440ab6e29e660ff27a45976e874155fc7ed18c556e848d29baea
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fsnmmaterials.com/UPFILE/userfiles/files/73250633394.pdf In PDF document text
    • http://vdadanang.vn/app/webroot/assets/files/xukuliw.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/c954259cf5f1bad3ccf5f255a97dbfe8/rimekaponorovimesewemasu.pdfIn PDF document text
    • http://chunmianxian.com/upfolder/e/files/20210902033351.pdfIn PDF document text
    • https://dp-silver.com/userfiles/file/26890638268.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/9dbab4771f8019c09dcf470dd0e485b2/76057663468.pdfIn PDF document text
    • https://history.tlshaa.org.tw/ckfinder/userfiles/files/bizaxefanosiwukasavapi.pdfIn PDF document text
    • https://ancoraeducacion.com/images/37205427072.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/21102087132.pdfIn PDF document text
    • https://minhvuongthuphap.com/upload/ck/files/24755004045.pdfIn PDF document text
    • http://compow.net/ckfinder/userfiles/files/16432587039.pdfIn PDF document text
    • https://scalper.ir/data/files/file/11232346662.pdfIn PDF document text
    • https://valkexclusief.reviewz.eu/app/webroot/files/userfiles/files/46659316595.pdfIn PDF document text
    • https://warsztatgdynia.pl/app/webroot/media/files/83510004733.pdfIn PDF document text
    • https://kocarbon.vn/luutru/files/roribizeveditotug.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/dfa6919e10b6eba118b638354ee6c874/sizaguwonowikajegaf.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613e8492dcc30---8989306375.pdfIn PDF document text
    • http://farmaciafici.com/userfiles/files/vixax.pdfIn PDF document text
    • http://julianowka.pl/ckfinder/userfiles/files/xotapuluzisatajunonazunu.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/10055710029.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/72630551811.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137aba2daa75---47869920083.pdfIn PDF document text
    • https://www.wemservice.com/ckfinder/userfiles/files/18875715325.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=asphalt+8+mod+unlimitedPDF 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_off0000cfd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD7 20920 bytes
SHA-256: 6f510ecfb11b717705c87c0669d681dd9bd896b3db43428a2fceeb76fe235a4b
font_01_sfnt_off00010602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10602 10844 bytes
SHA-256: 842c7f04d67ac691103d55697273272bd583fccce53c862e00da9aa799aebdd6
font_02_sfnt_off00011ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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