Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2a964f33fe2390…

MALICIOUS

PDF

76.4 KB Created: 2021-09-01 09:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9141c9a0dfb945ff629795a55f4c44f4 SHA-1: 43dc0b16a63b5a22153bd0447dcfef5f5fded50c SHA-256: 1b2a964f33fe239054dcd33dc41c6e192b482a4d5cb9a089c1fbdb2f922c9580
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The presence of a 'Fake invoice / payment lure' heuristic further supports the phishing intent. Although no scripts were directly extracted, the overall structure and URL patterns are indicative of a phishing campaign aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160faac37b512a---mojovetixagukobikanatowin.pdf In PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a899fe19b6---22857331483.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/a42159e1544e50eb79c26b855638937d/gudobepopijubemapazisok.pdfIn PDF document text
    • https://colegiumaniucarei.ro/ckfinder/userfiles/files/6554723261.pdfIn PDF document text
    • https://zenmobile.in/jaipriyart/uploads/files/1108525108.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a086edcbe4---8537668723.pdfIn PDF document text
    • http://chemicalengineers.ie/images/nasotipajowixedexaxanu.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/b44515bd30e66a22d8fa26b2aa56e9db/19912889371.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16110b6120e16b---97820761562.pdfIn PDF document text
    • https://www.zolmedis.lt/ckfinder/userfiles/files/80667980844.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/12492812249.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2e52b7494---54814691039.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/78997563623.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/59579508203.pdfIn PDF document text
    • https://mcdpiti.com/userfiles/files/47543408289.pdfIn PDF document text
    • http://surausa.com/uploads/files/71931835124.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db8694b0cee---47278521343.pdfIn PDF document text
    • https://pamukoglu.com/userfiles/file/sikibile.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16114f782a8330---tilulukinidek.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/27671289543.pdfIn PDF document text
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/a673c48c0c012770745c6efc981e1932/56309581661.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/81a15f14330eecbe76204d3f4ca052a3/bimivuxoloxukikegomi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=ipass+missed+tollPDF 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_off0000c9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D1 16880 bytes
SHA-256: 904636d831babeaaa3102b00898df708c4ff7f0aa315d69f0b2d48d3ae9a0c05
font_01_sfnt_off0000f4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F2 10300 bytes
SHA-256: abfafb8f5f83d171850e96bfff07763574e481667e7ef8755eefc8323712aa69
font_02_sfnt_off00010c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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