Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0628601ee3400b…

MALICIOUS

PDF

111.6 KB Created: 2021-09-05 04:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 771fa227f9a7a13854a37fb78d0029d9 SHA-1: a88f6d8e2c8b2653687ef89d64ae647da335299a SHA-256: 2b0628601ee3400b33c1017fef619d3d5dc8ba337113a216655f675ccc9d4e72
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of a 'Macro/content-enable lure' heuristic suggests the document is designed to trick users into enabling content, likely to download and execute a secondary payload. Several URLs point to compromised CMS uploads and disposable hosting, further supporting its role as a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160948357af432---77287664397.pdf In PDF document text
    • http://ahs1968.com/clients/d/dc/dcea35c349c70fb55dca458fc6558ff6/File/85663133037.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcc552a95f0---fulorasajivejizizoxafuf.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/83307891595.pdfIn PDF document text
    • http://riph.pl/userfiles/file/4278459650.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fee477edb8---34553543081.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d29e2941e5e---54928902016.pdfIn PDF document text
    • http://xn----7sbicwad4afgcgd5aph7d5e.xn--p1ai/ckfinder/userfiles/files/zifemaxovuvetaliresetopi.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160aa080dd4757---nuxogogerivotutejul.pdfIn PDF document text
    • http://em-mould.com/ckfinder/userfiles/files/denazelamu.pdfIn PDF document text
    • http://kengosushionlineorder.com/uploads/files/89322526259.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/84675466412.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6042423c8---rotitemulojogemuj.pdfIn PDF document text
    • https://diarch.in/WYSIWYGImage/file/nepari.pdfIn PDF document text
    • https://osikovo.eu/webroot/img/content/files/72295761762.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/vedevesem.pdfIn PDF document text
    • http://sushiosushi.com/uploads/files/79850361160.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/4714993275.pdfIn PDF document text
    • https://cartolmania.it/file/dalobiboz.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/5mt65jrbprsj2fl9hce2ahhcq5/vefegosirukevaj.pdfIn PDF document text
    • http://evergladesharvesting.com/ckfinder/userfiles/files/98897655086.pdfIn PDF document text
    • http://mgocsm.in/userfiles/file/kowebabajopeguwodamiwu.pdfIn PDF document text
    • https://makenie.com/upload/files/39798460486.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=vba+worksheet_selectionchange+vs+worksheet_changePDF 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://www.mvps.org/dmcritchie/excel/event.htmIn PDF document text
    • http://www.mvps.org/dmcritIn 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_off000148b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148B3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000160c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160C5 19900 bytes
SHA-256: 2ce5bc4b4cc06880caba49bd1a5e9f893abcf384daa75ad5296219d8092c9a2a
font_02_sfnt_off0001951e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1951E 10896 bytes
SHA-256: 88081d54d56ff97362f499f9150b951cad1bf02660f624d50b507ca418f42774

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