Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd47f02a3046ae5a…

MALICIOUS

PDF

87.6 KB Created: 2021-06-29 15:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ddc3a92bf329df83f32c32f74257956f SHA-1: d46c6b59ae32eb81faa2e176b30cec9bc8fae4a5 SHA-256: fd47f02a3046ae5af4009038d404787877f3a6040ff51b08fcf0b465a3fda61a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous links pointing to compromised WordPress upload directories, suggesting it's part of a link farm designed to redirect users to malicious sites. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609a0d496278a---basux.pdf In PDF document text
    • https://benjamindreyer.com/wp-content/plugins/super-forms/uploads/php/files/fc29558e8f535087c99e3333926eb763/5949584671.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/4dtd51g6uvkp4i9k87idmups5q/seziloputazad.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a079a19169---95423191053.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bd7f80658---dikimerezavomuzumifixenix.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/wugurudas.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a079cdd50c---55992848805.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160773efce73e7---kubasi.pdfIn PDF document text
    • http://stl-hk.net/userfiles/pifilus.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075ff754f712---tisunarosinojukitipizot.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/9ab45d014e3e5a5c617c26256e2b3cde/joremavemob.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/u6bd6685ovlklgsh5ehd33p585/86265615223.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16083e7832c1dd---nilaguxape.pdfIn PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/36815447562.pdfIn PDF document text
    • http://autodilykanka.cz/cmsimple/images/file/jofizofekexozagonekaxuje.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/96906148689.pdfIn PDF document text
    • http://byty-pardubice.eu/UserFiles/File/nulap.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/bbab830e5de1f00d1dbc1154ec752017/59910368739.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/3788364034.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afcda0ace3b---jagugugodirewexad.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/g9ejuok5n9gj4en60ms9vpuk80/75470192271.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c71d058ec15---37860490821.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=abcd+format+lesson+planPDF 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_off0000f419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF419 10808 bytes
SHA-256: 749f165c88cbb75f26dcc5436d94b391285d34b092e07eaef2c862359cd36249
font_01_sfnt_off00010cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000124eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124EB 17060 bytes
SHA-256: a28fcf1dc962d81c8423eeedc35a111b00a674b8c93b150cf67fce6454178838

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