Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d74866d669ab23d…

MALICIOUS

PDF

82.9 KB Created: 2021-09-06 16:09:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 6eeea2b44edcf7adbf5b1a80a621fd80 SHA-1: 0e8c65f4169f7d8cff5b11e9744d32bdf7e50522 SHA-256: 0d74866d669ab23d39dbafaa63efaad176f50be4ad122af21c00f06a6bf5fb1c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links to compromised websites, indicating a likely phishing or malware distribution attempt. The presence of these links suggests the document is intended to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c922664484b---tixigekitululokeju.pdf In PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de863807683---9703153367.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/zuruguxate.pdfIn PDF document text
    • https://www.meditech.cz/ckfinder/userfiles/files/tonedu.pdfIn PDF document text
    • http://sampoernastrategic.com/uploads/image/files/64626384979.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609231af0d60a---lolami.pdfIn PDF document text
    • http://hqshop24.com/userfiles/file/25800170711.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-7-30/20210730024736698553.pdfIn PDF document text
    • http://bckbytow.naszbip.pl/img/upload/files/36643619414.pdfIn PDF document text
    • http://standartbio.com/fckfiles/file/werusexivovupope.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f2eac0592---kotirimakivi.pdfIn PDF document text
    • http://churchtextile.com/userfiles/file/nolupusepuke.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/86fa5c671e2eea4af325f1fa669199f9/zavatedowaxo.pdfIn PDF document text
    • https://dentalrud.com/userfiles/file/kotumowirodolijadisuwugu.pdfIn PDF document text
    • http://sosonomo.com/ckfinder/userfiles/files/99660513884.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/tawajosazubunesunos.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/5fc516d5da6f7b089984c73f5a762588/59500750981.pdfIn PDF document text
    • http://zonweringbelgie.be/ckfinder/userfiles/files/romukejijejigesosit.pdfIn PDF document text
    • http://skkouty.cz/ckfinder/userfiles/files/85999092574.pdfIn PDF document text
    • http://m-camper.ru/ckfinder/userfiles/files/41326293835.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/7c602ab57b88668ae99e53c9d100520b/84657167359.pdfIn PDF document text
    • http://gotoippc.com/ckfinder/userfiles/files/xiluviwasuwepefesimipoxe.pdfIn PDF document text
    • https://dcimx.com/files/moxagewolos.pdfIn PDF document text
    • http://nakloboucku.cz/uploaded/file/limafabeleguwufelejozirat.pdfIn PDF document text
    • https://praward.tw/wp-content/plugins/super-forms/uploads/php/files/d8968998585ee81a16dcb91f64d37e3a/54967998523.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=padre+pio+miracles+pdfPDF link annotation
    • http://www.thaiticketmajor.com/static/imgUpload/files/sonokirifipagixo.pdfIn PDF document text
    • 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_off0000e100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE100 17412 bytes
SHA-256: bd911f26a0c139ec845539a6b21222c718953c206e6d43520bb5e79be1a697e2
font_01_sfnt_off00010d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000125aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125AA 10580 bytes
SHA-256: 9f1b3bdc744b3a6d78f0fcee5e9bcd2864e889cea92fc2e21fd00a3da5401cef

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