Malicious PDF — malware analysis report

Static analysis result for SHA-256 f975b826901851c7…

MALICIOUS

PDF

76.7 KB Created: 2021-09-23 12:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: fc77977b607743e0641af48e870f6f1f SHA-1: 873a95e8c8d3437f18d3c4354395ff1ac3bf3fa1 SHA-256: f975b826901851c7adf441f8ba9d82dc50a1ae6bac33ce3cb2d9b9dea7d929a9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The lure 'download counter strike android offline' further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://indigobaby.eu/upload/files/favopejoti.pdf In PDF document text
    • http://mediasingrid.com/js/new/fckeditor/userfiles/file/508518350.pdfIn PDF document text
    • http://dautuck.com/uploads/userfiles/file/butakugovupisusokuwa.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20210912_B9813414E20D1AF7.pdfIn PDF document text
    • http://lawngo.net/fckfiles/9014812181.pdfIn PDF document text
    • http://alianzablue.com/aym_image/files/25774359148.pdfIn PDF document text
    • http://tantusmarina.com/UserFiles/file/gakuf.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/2a9fa032b439a46461fe26bd0ad37cee/57772184004.pdfIn PDF document text
    • http://traiteurluc.com/userfiles/file/rorotobodinevuba.pdfIn PDF document text
    • http://insfilings.com/skyzone_classic/upload/files/14993547410.pdfIn PDF document text
    • http://thueotodn.com/uploads/image/files/titedekijofikejuvemab.pdfIn PDF document text
    • https://mysilo.com/upload/ckfinder/files/jotofejowakudanagotum.pdfIn PDF document text
    • http://xn--80aer5aza.xn---42-5cdakyymnnb9ake1az.xn--p1ai/ckfinder/userfiles/files/tuboratu.pdfIn PDF document text
    • https://actor-conseil.com/files/file/23401143243.pdfIn PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/76436558707.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/bf964823384589a2814497f3bf672f5a/32714560740.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202109/file/24404206155.pdfIn PDF document text
    • http://johnmichaelharrisonlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/venoxikisotanilekikag.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614b4daa17989---80648377688.pdfIn PDF document text
    • http://glassick.com/userfiles/file/tejifiviruwaxile.pdfIn PDF document text
    • http://karcannakliyat.com/userfiles/file/jivaz.pdfIn PDF document text
    • http://tofuyatogo.com/uploads/files/kedefefaxumujosabol.pdfIn PDF document text
    • http://ilyxrace.com/userfiles/files/wikigesuti.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=download+counter+strike+android+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_off0000c55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55A 10748 bytes
SHA-256: d788f8b4c2feca10d4a7d594a61ae08a85cff231c7ba11772e1739ba0ff447f3
font_01_sfnt_off0000de41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE41 18140 bytes
SHA-256: 06daeb84f8421889091f8814cd51e6645af77d0ea6793f304fb6941e77ad90c3
font_02_sfnt_off00010d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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