Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae00c8290ba720f…

MALICIOUS

PDF

91.0 KB Created: 2021-06-29 09:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f8d5492f9943bf8c6e5fe327e8efd595 SHA-1: 0a3897343567fbd8728fd2f1cc4fe9d40dfbc2ea SHA-256: 7ae00c8290ba720f5378f092e774daaf649f9dfd49c8238195a42b78c3ce462e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to various websites, many of which are associated with compromised CMS uploads or are part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or SEO poisoning. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090fe6211390---48000282804.pdf In PDF document text
    • http://cdmvt.cz/sites/default/files/21593531865.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/4fd382d3833107408ac1c8c4d554af7b/94533689920.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b841e7523c6---xejumisumunijesididexu.pdfIn PDF document text
    • http://aisef.org/uploads/userfiles/file/file/nirozukaweg.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/69869349534.pdfIn PDF document text
    • https://gertiesbloomers.com/kousumi/nulook/upload/fckimages/file/38151988577.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/h2o1frvb902eha0276utbspo44/30773085493.pdfIn PDF document text
    • http://allasclub.com/campannas/file/47428461103.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nefegulabajumalulumenu.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/juxufuzefabo.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160800a3d3d1a7---19412700549.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/f5b50117a6c9561824f60d7be403bfc0/kimirol.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/79338919174.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/27576085179.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/ca7512e57908642b1daf42e86a4774b7/tikudumeximir.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/cd213cd9a626a822c78bf42ec388c876/xetirafegejafokidiragi.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d5e9eac2f---dufuzuvuvatod.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/zidinodisiko.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/56265364777.pdfIn PDF document text
    • https://capitalsyndic.com/userfiles/file/46714241855.pdfIn PDF document text
    • http://personnelstrategies.net/userfiles/file/gavinenibila.pdfIn PDF document text
    • http://houstontca.org/Content/uploads/files/sarabuvukapovusebit.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/vorawaxidesod.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=the+node+beginner+book+pdf+free+downloadPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3F 17188 bytes
SHA-256: 7131aa20a05837ad24dcc6e18e5f333cd8f2400f4c5b4a9e67e1c34d78e9e9c4
font_01_sfnt_off000116ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116EA 10792 bytes
SHA-256: b6f500659b935b0ec755d467e9202ef7ee8d382cc6883e87f64474322330abea
font_02_sfnt_off00012f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F4A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001475b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1475B 16480 bytes
SHA-256: f1d940b2ab9ff85f2deab49caadc5a5e7f7d916b0a1016972d86ee187bb175e9

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