Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ad5b1ef2c82eab…

MALICIOUS

PDF

82.2 KB Created: 2021-09-12 10:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7237e40abeb79aa71335c2b71a60ad82 SHA-1: cb06c0cd18f6d2625aa420d221b152f66ed41bde SHA-256: 14ad5b1ef2c82eab074b2fcbe3ab240e8c4d5749a90b1059e498614d1009805a
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous links, many pointing to potentially compromised or disposable hosting, designed to lure users into downloading further malicious content. The presence of a link farm and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://mundialimportweb.com/userfiles/file/fituletuzokiraxoso.pdf In PDF document text
    • https://luxurybaths.marblobaths.ph/app/webroot/img/files/zavosin.pdfIn PDF document text
    • http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/kewebodoperibuguxotevasul.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613137fd79e71---66352411080.pdfIn PDF document text
    • http://hoya-system.com/uploads/files/202109051856529739.pdfIn PDF document text
    • http://odontotecnicacoop.it/userfiles/file/20551736223.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161336bca3046b---rutozejedixajuj.pdfIn PDF document text
    • http://portableandcool.com/files/files/zozifidanido.pdfIn PDF document text
    • http://nhungbaithuocnam.com/img-tvdl/files/84179530225.pdfIn PDF document text
    • http://offerparts.com/upload/files/56715524025.pdfIn PDF document text
    • https://etevent.itweald.com/uploads/files/6135a17b9e558.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/navoxelavoxowugevojemef.pdfIn PDF document text
    • https://goacetours.com/ckfinder/userfiles/files/tewerobarokedi.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/0ca4kh5v6n26mrdrhthgh23ndj/gegugolomuzakizevuzuneluw.pdfIn PDF document text
    • http://chromoink.com/updates/file/nujolomejuni.pdfIn PDF document text
    • https://birotex.rs/images/files/2650835409.pdfIn PDF document text
    • https://tierlistei.ch/downloads/23348868940.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/9269052214.pdfIn PDF document text
    • http://hotel-ambassador-nice.com/upload/files/71136183863.pdfIn PDF document text
    • http://www.pibmg.com.br/ckfinder/userfiles/files/files/xarerulidavaxex.pdfIn PDF document text
    • http://honeystraw.com/uploadfiles/file/30664644014.pdfIn PDF document text
    • https://manajrgvaaradhi.com/cms-uploads/files/suzuxogupan.pdfIn PDF document text
    • http://topbuild.net/content/xuploadimages/file/89015980244.pdfIn PDF document text
    • https://mimzyonline.com/userfiles/file/xosojojuwezarusokeb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=download+walking+dead+mod+apkPDF 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_off0000d9f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F9 18772 bytes
SHA-256: 421c80b6409459c8120942eb73fcabef8c23ca4e52f105e31f97690e3bdba9ac
font_01_sfnt_off00010b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12385 10548 bytes
SHA-256: 15db50318edf44589d67dcf754a24558f351050885b7b1de0731ebd44e9b746d

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