Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2f1660ed281232…

MALICIOUS

PDF

93.7 KB Created: 2021-08-23 20:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 59fc3f4300aa14207c29459b2b2fdb06 SHA-1: d965b4d10961d6fa86ab28b0efe6501b4e1f6a39 SHA-256: ea2f1660ed281232d036ccca835981dfee844ed5ea32c80c3e09bbf56e8d2cd2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. While no scripts were explicitly extracted, the nature of the embedded URLs and the ClamAV detection strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

Heuristics 6

  • 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.
  • 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.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084b3cd08b7a---42590023543.pdf In PDF document text
    • https://tecnomatec.cl/upload/file/78784922630.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/f30qd50vminlclt7p5gcju0q64/dadegurazijapuse.pdfIn PDF document text
    • http://angeladaniel.eu/uploads/files/mobuzogebenubilexe.pdfIn PDF document text
    • http://mcelvain2020reunion.com/clients/b/b5/b5167212b805812c9439186484f80f5e/File/1901612746.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b46937826a8---vaxegokedugedo.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/c57ae69e890b65d201aa4126b051d53e/megulifakidaxesadosozula.pdfIn PDF document text
    • https://rpdev.org/ckfinder/userfiles/files/69348093612.pdfIn PDF document text
    • https://mecaniquekd.ca/upload/file/ruxosowufuguwifeba.pdfIn PDF document text
    • http://emblem4home.com/UserFiles/Member/File/tikabolat.pdfIn PDF document text
    • https://goodline.by/userfiles/file/14938226939.pdfIn PDF document text
    • http://bobiniauto.com/userfiles/file/77411300063.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609dabf0bfcaf---64224707010.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16091e07105bed---xugagubaguluvixova.pdfIn PDF document text
    • http://portalpr-b2b.es/img/user///file/_0841664001625179099.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/mumuxibod.pdfIn PDF document text
    • http://studiotecnicoarduini.eu/userfiles/files/zuvojopera.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/n6taob58f1uenl6de8ignosr6t/96414133479.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160d1f34c49571---98716526852.pdfIn PDF document text
    • https://preprodpcb.com/userfiles/files/72815415676.pdfIn PDF document text
    • http://kleiberit.ru/files/file/siledogetobele.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/4ee59a3f8f44b1a2e10228aabcb15518/5788034482.pdfIn PDF document text
    • https://losungversorger.com/product/file/megubusojusixaxed.pdfIn PDF document text
    • http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/c3e0eb76e01dc53eecf0bbd5341bc424/63541321529.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/16104325a8a5e0---kosivokadorenovorizebi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=came+in+handyPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD763 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467
font_01_sfnt_off0000ecd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD0 8004 bytes
SHA-256: 555f1bacc3c3cf36781c73211170608e8e9a390e630f8577684ba032afa0ba53
font_02_sfnt_off0001077a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077A 18220 bytes
SHA-256: 67659e74c0c33dfc83e8b2683b0ef206c571ff45b99b672c92814caf5904a11c
font_03_sfnt_off00013719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13719 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off00014f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F30 10124 bytes
SHA-256: 8695558e21b5b648b31e00564866217ecf74f35efa2e4edaf64bcebbd81fb03e

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