Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee225aa0c1dcb465…

MALICIOUS

PDF

80.1 KB Created: 2021-07-30 05:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: a6eb8a0e42fb0f0e935e774004347036 SHA-1: 6605a285417eebc791cf0781748dcfdc4481d162 SHA-256: ee225aa0c1dcb465be2ec677ec069636cd58410691f2ba2deba170162e4df0c9
164 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • 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 http://www.florentmaussion.net/userfiles/File/titedano.pdf In PDF document text
    • https://sportsht.com/userfiles/file/waxuxadevipiresab.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be8052e8442---91157169820.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/4018cf4875a9af80097e3fe0e6716637/98071248283.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdce1f338d---77498108561.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe8ca00626---rozij.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/7f21fbd2ac7aafda9d42eb09a7587a67/31953149972.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/4494596387e3edc3e32a4b232334cdbb/texojovolijif.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/pltc728am9inmh92guk0l2ce4a/redopisu.pdfIn PDF document text
    • http://cichanski.com/Upload/file/lebafigimudu.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/bhqv5u583v2j7aoailf8ip0082/kotegodadigetumor.pdfIn PDF document text
    • https://chameleoncoupons.com/adgprocessing/uploads/files/6662681349.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/t9ib5avdm51i1vv3gsqkhgq3t1/pemamogidakedabekiza.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/24007245639.pdfIn PDF document text
    • http://thuexe7cho.vn/upload/files/89693375895.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/37854751603.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/35543cce79af7bece245bdd53ca5084c/nokuvajiborosaj.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/9999080841.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2b22aa9148---20102387818.pdfIn PDF document text
    • http://ipllaser.in/uploads/mudimunoruja.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/e80a8e9dd76c58886ce13045c2980954/lizula.pdfIn PDF document text
    • https://milsagliksen.org/upload/ckfinder/files/wanebabaxinije.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095216d00a8d---vamekisiralimujodoboke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=maine+pyaar+kyun+kiya+mp3+song+download+320kbpsPDF 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_off0000d26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26C 17020 bytes
SHA-256: e0ff687ce948547f6cea2f55c8f2123598ae5bd563a9a4baee6cb521ffa95d94
font_01_sfnt_off0000fef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF2 11576 bytes
SHA-256: 94f7e6bb90ef1e86824e56ad6c088a74879118b4c6f0de96f4346b1aba7b13f4
font_02_sfnt_off00011a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A14 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1