Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed007c4d2219d74…

MALICIOUS

PDF

95.6 KB Created: 2021-07-08 07:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: f19d040c86a50f6306025026ca8339b9 SHA-1: 4e77bfba4ef0371809490e35ed1ceeb5a1d4a8df SHA-256: 3ed007c4d2219d742c92e12af6d89c59caa212285567a17076ac2e5a3f11b3d6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads, likely intended to lure users to malicious content. While no scripts were directly extracted, the PDF structure and heuristic firings indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adab69320b3---seradajagotufawerir.pdf In PDF document text
    • http://apogeeconsultancy.com/upload/files/79722058229.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/buvamurezisewotusafami.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160725c9aa1072---99570821972.pdfIn PDF document text
    • http://fullx.net/files/64536687191.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16089a9cfba9a0---fugatirevumetivinavi.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c86d1f8b08e---62649582767.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/3d87aaba42bdb37faf45539f9911a900/rejorulawasi.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/47641358770.pdfIn PDF document text
    • http://tomaszfilipczak.pl/userfiles/file/84833523136.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6e2178646---dekileronoluxakeka.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/81130095207.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160965153d2ba0---jeninezotatotosak.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/nl7dob9vun5j07s8a96r9k98f7/bulafaviwemamomobigawexur.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8b31e493d---58124751965.pdfIn PDF document text
    • http://litho-and-co.fr/ckeditor/upload/files/jajalalukasididev.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d617d27059---87359192533.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160855cc633694---31403948166.pdfIn PDF document text
    • http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/gujekemadepezoxokizetewo.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/sonupenode.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=d%26d+druid+circle+of+the+moonPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11909 17536 bytes
SHA-256: 45edacdbd0c017469a0a6e7344738e72669ecdae36a3820bae0fe244900bd7d2
font_01_sfnt_off0001474b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1474B 9076 bytes
SHA-256: f695977626623e59fedb2fbedebd468d0acf89ff6f6ceafeb3cee4351ddee6c8
font_02_sfnt_off000159f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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