Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e62a845683bb20…

MALICIOUS

PDF

100.6 KB Created: 2021-09-11 02:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c06f4fa68cea9637f2fedfe6aea06934 SHA-1: 4b0067f10e3b06673f2cff942f848d1f0fc8ec36 SHA-256: f0e62a845683bb20c8ba5a29e3ae735e7d05250908ee860fed81da80e80ce691
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous embedded URLs that point to various domains, many of which are associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to lure users to external malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://app0.linkeo.it/ckfinder/userfiles/files/89659564881.pdf In PDF document text
    • http://laihoawedding.com/app/webroot/upload/files/62240324734.pdfIn PDF document text
    • https://hidropomp2008.com/uploads/userfiles/file/xozikejudaru.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16134d0a360081---bosegibemalob.pdfIn PDF document text
    • http://svadbavmoskve.com/content/xuploadimages/file/sivisulagokaposubej.pdfIn PDF document text
    • http://jhdjt.com/images/upload/File/54064496484.pdfIn PDF document text
    • http://spain-ex.com/images/blog/file/wupimiradetumikizotom.pdfIn PDF document text
    • http://mestan.by/images/file/75360170163.pdfIn PDF document text
    • http://testplanet.nl/uploads/files/pafawumapipab.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5b7b1cf41---woforurezofuwesarubur.pdfIn PDF document text
    • http://kyochonbuenapark.iorderfoods.com/uploads/files/24743416586.pdfIn PDF document text
    • http://antonellascarpittadesigner.it/userfiles/files/nomive.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/sigisolizezepajuler.pdfIn PDF document text
    • http://matsusushionline.com/uploads/files/70641243348.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/56502337016.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/4e094f1bb34a06460b6c0c6b8474a544/vimatobodigug.pdfIn PDF document text
    • http://remont-elektro.eu/archiv/file/zogovulofarototaz.pdfIn PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/50136631599.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/12f7289b4caa2f24514d82f6e8ab8743/30316593842.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/pasijelosademepubazibe.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/df57c058142afc34224fef4250ec7986/53724061938.pdfIn PDF document text
    • https://stmarys-perthamboy.com/upload/File/56236561967.pdfIn PDF document text
    • https://tierrettung-in-katalonien.org/ckfinder/userfiles/files/77978618918.pdfIn PDF document text
    • http://auto4-spb.ru/public/images/ckfinder/files/malotubitotagebutanatam.pdfIn PDF document text
    • http://harposwebdesign.nl/app/webroot/files/userfiles/files/biguxakowogadeva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=magic+treehouse+book+1+pdfPDF 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_off000107c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD5 17916 bytes
SHA-256: 6367af8007258dc8ed1b1a0358fb90db4d3685cdca00f47f01cf8e324577e120
font_02_sfnt_off00014eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EAE 11128 bytes
SHA-256: f1a48e00ddee32383ffdb50dddcec5d8ddfe5d9c4245b9424c5fea946c78a465
font_03_sfnt_off0001687a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1687A 17828 bytes
SHA-256: 9bd840e38ca724e0f7add454c8dc7fb71ec8708ddb0d9b64c91e59f29ffb0f91

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