Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d58112a77cdbdb…

MALICIOUS

PDF

78.8 KB Created: 2021-09-02 23:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 1c5c9758b0f073700d26276666630b35 SHA-1: b3cbf72914332fee0d1579b28e1604f445097f71 SHA-256: 11d58112a77cdbdb0474fe0b293d0325e995292224356e150518ecb820fba1fd
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f0a466db1---85097223280.pdf In PDF document text
    • https://ozsersogutma.com/upload/files/felunavizoviter.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/fc46ce815f6c4c4bc9f6984db7917fca/xikika.pdfIn PDF document text
    • http://t-p-fortune.com/userfiles/file/77474356717.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/a78a10281952bf4d93545a02fce14a5a/48415436866.pdfIn PDF document text
    • http://burnettefamilyreunion2021.com/clients/867108/File/bedogalaniwabilomilit.pdfIn PDF document text
    • https://sanagustin.cl/files/2470444718.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1608db357890f6---natedujusumede.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/f792c7c5a8b1ef4122afa26015eaf868/mokigikisalilosubekolidub.pdfIn PDF document text
    • https://lecachet.fr/docs/files/38889379366.pdfIn PDF document text
    • http://copingconversations.com/userfiles/file/ritaponafiworawawalu.pdfIn PDF document text
    • https://alsultantrading.ae/userfiles/files/65329793462.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/d00ee0d1d3e9e7f36a45a900d8c8e450/roresosimid.pdfIn PDF document text
    • http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/vezirosorasixujoxi.pdfIn PDF document text
    • http://lncxjzxxw.com/upload_fck/file/2021-6-19/20210619021549542841.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/553746211f2aab0f4b096d48dfe8da8a/gipibelumirovopitunadakog.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606f473253c9e---44804193825.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070aa1f3e379---gezodidixitajovo.pdfIn PDF document text
    • http://bethelcommunityone.com/clients/880032/File/57691705103.pdfIn PDF document text
    • https://moiatakashta.com/userfiles/file/zatexoxewopupewunupema.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/18830302753.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=mortgage+underwriting+training+manualsPDF 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_off0000cf09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71B 17868 bytes
SHA-256: 5a53a540fa269d0a76bc847cf43a3244ffda2dbed749d2767e611829c04e5d28
font_02_sfnt_off00011549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11549 10768 bytes
SHA-256: aaa3c7df545287860a74609dd4a1d5516131c8b712de7af5f152d5f4f98173fd

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