Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc47702cfa6f2e8b…

MALICIOUS

PDF

85.7 KB Created: 2021-07-01 09:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 7d9e5a1f8f30ddb012857df31843eac8 SHA-1: 97b8b0f396964c3816660cf0ca8710b3f6b94916 SHA-256: bc47702cfa6f2e8b0c8e4fda2cbb0d7b2e13d948228478646df643564c36fbcb
156 Risk Score

Malware Insights

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

The PDF file contains a large number of links, many of which point to compromised websites or disposable hosting, indicating a link farm designed for malicious purposes. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL analysis point to a common tactic of using documents as redirection vehicles.

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 http://dui-antidote.com/images/userfiles/file/13265257389.pdf In PDF document text
    • http://alemotta.com/resources/original/file/28122951815.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/62259427454.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/zefolegevo.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608036dee07f0---95971529270.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/77664530775.pdfIn PDF document text
    • https://kvkumariajnkvv.org/singhania/downloads/file/ganewamami.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/7397b1faf91eeb22a2af67c1a094d0db/suveligadugisazebivu.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/vedunojololebopetirovedi.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/tc4p0ukk69cjghqfnkr7759vh4/6206060671.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b76ee9022e0---balek.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16086486417feb---11042930611.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5403807d1f---sexevexotitodekubogosuz.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/dinixanez.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ae685ab38---vutimurogapixodupago.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/zunumogolatexiteb.pdfIn PDF document text
    • http://garmagostaran.com/Upload/file/44129380252.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/35c3b491ffb16a1c2269d4f9c689e6a5/rofewijenitifexen.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072007ca010d---zadilesilax.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/39423840302.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/5cb8d8eaecb972f971d6d23e2b0936f3/binajisafijixulurivovu.pdfIn PDF document text
    • https://inncredel.com/uploads/bojivozufili.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=bruise+on+ankle+for+no+reasonPDF 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_off0000ef12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10724 16596 bytes
SHA-256: 298b6bd347e6b1ce4c04a0e8b312e60fe681f16a5ec21978723f651a94755a93
font_02_sfnt_off00013254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13254 10356 bytes
SHA-256: 7b9e03a122b592c891310cf0fc6e189d08b9f62778956bd722e6afe746aa3234

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