Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd02c8f261a7be8e…

MALICIOUS

PDF

81.3 KB Created: 2021-09-05 09:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 27fc032e73586c67e4321ee9b932dde1 SHA-1: 45000ef039df7f70d9d0e84ee8b0b3eddc6f8716 SHA-256: dd02c8f261a7be8ecc26232277a082c1625d0ad16d3e3f59f29034375fa0e9e9
204 Risk Score

Malware Insights

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

This PDF document exhibits multiple indicators of malicious intent, including a high ML classification score and ClamAV detection as a phishing trojan. The heuristics indicate it functions as a link farm, potentially leading to compromised WordPress sites, and includes lures for a download button and MFA harvesting. The embedded URLs suggest an attempt to trick users into downloading further malicious content or providing sensitive authentication information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/bfhlhq5jii48jo8hnoj0qlekpa/95774267425.pdf In PDF document text
    • http://wenxuezj.com/images/File/62528016380.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf4fbb1a9a---47347676463.pdfIn PDF document text
    • https://sunnyrosesschool.com/userfiles/file/69046722922.pdfIn PDF document text
    • http://vote4dannybarry.com/clients/2/2f/2f5d4f67c16906f9b09010289963de11/File/kefokewovowusejita.pdfIn PDF document text
    • http://westmoorclassof1965.com/clients/5/52/52ec68f2b927accf75267cb07bfcc891/File/zapabaje.pdfIn PDF document text
    • http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/41894514933.pdfIn PDF document text
    • http://mtsskzy.com/userfiles/file/junen.pdfIn PDF document text
    • http://lhsclassof1971.com/clients/74120/File/tenadonef.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/09105a82e3f13c5edc685e833682363e/55517007968.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/116f6f7fb99d0f4f1e3c31d03720afa4/kajajo.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/91961311265.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079dc8d26e3a---59088962113.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608575eaa047e---38405871456.pdfIn PDF document text
    • http://rc-modeller.se/images/file///56228702491.pdfIn PDF document text
    • http://bdnchem.com/upload/files/niposogegabawepebutiwamaw.pdfIn PDF document text
    • https://euroroma-bg.org/files/file/97581679270.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/koxowojugogogoviwixiwixo.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0cdd966b5---belajexitol.pdfIn PDF document text
    • http://beachhigh65.com/clients/879402/File/wenirijivakoludenafogo.pdfIn PDF document text
    • https://hurghadalife.net/userfiles/files/fuxomixibimasid.pdfIn PDF document text
    • http://yuemeism.com/uploadfiles/files/97655779631.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=haryana+police+exam+practice+set+pdfPDF 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_off0000d153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD153 10988 bytes
SHA-256: 38cb71ff2fdeb265b253837cace8a2e8e16f515d93643489d39abd9a9384e9d6
font_01_sfnt_off0000eacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACD 20040 bytes
SHA-256: 4a8c557c5e183e61fb1cfc0f145f5828edb7129ba436a58c86c6f1803190b8a7
font_02_sfnt_off00011fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FCC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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