Malicious PDF — malware analysis report

Static analysis result for SHA-256 057776325b9605a2…

MALICIOUS

PDF

69.6 KB Created: 2021-09-24 17:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a2f9ccf4877cca17da1b0250c143d5e1 SHA-1: 9ea59e97439f5e200819fb5cdb829e5f5c55a34e SHA-256: 057776325b9605a2ad16a260caa05821502b0deed5470b7beeb2364de734859a
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous external links, many pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The PDF structure itself is minimal, with a large image and few text blocks, consistent with a visual deception tactic to hide clickable elements.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://coretry.ru/uplcv?utm_term=divergence+adult+game PDF link annotation
    • http://qiuyutv.com/userfiles/files/20210901071255.pdfIn PDF document text
    • http://sbkf.org/files/files/wejipevaramesidixofome.pdfIn PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/77512514163.pdfIn PDF document text
    • http://dochoiotovn.com/uploads/userfiles/file/duxasurijev.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613a3bd2b70b8---nezogozifudagefedudikeli.pdfIn PDF document text
    • https://associazionebriciole.it/public/file/bidibekudevexurip.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/161492794dc744---wurosidike.pdfIn PDF document text
    • https://ewt.cz/res/file/85864577222.pdfIn PDF document text
    • http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/6831571387.pdfIn PDF document text
    • http://pandoraecza.com/genelresimler/file/wukaz.pdfIn PDF document text
    • http://headrepublic.pl/images/files/keniruzupadexodukosof.pdfIn PDF document text
    • http://abpjse.news-read.com/upload/files/fisonapabexujupupivamata.pdfIn PDF document text
    • https://mehreganimaging.ir/images/upload/files/delakipuneraruzugavoboj.pdfIn PDF document text
    • http://yh-nutri.com/filespath/files/20210911074501.pdfIn PDF document text
    • http://dinskayarealty.ru/media/file/58475260934.pdfIn PDF document text
    • http://lovesenergy.com/file/luzegolefusoxatosanuzixu.pdfIn PDF document text
    • http://fgosvo.ru/files/files/77921696661.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f48028c1fb---36242244259.pdfIn PDF document text
    • http://sibmaxi.ru/userfiles/file/fasoxubuvupirefixijix.pdfIn PDF document text
    • https://www.jancsoalapitvany.hu/ckfinder/userfiles/files/25366797334.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe57590ae2---mijoziveloseze.pdfIn PDF document text
    • https://506hlapeta.com/files/file/20387591191.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/153405634aec295c00aa7a651dabf7f2/76870932094.pdfIn PDF document text
    • https://careersourcechipola.com/files/public/satiduxawami.pdfIn PDF document text
    • http://seattledesis.com/fckeditor/file/bejigezasosodezitudivul.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_off0000b2ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2EE 10592 bytes
SHA-256: 589474424a9602431de72320018b0302c8d31544bb19b7c481803d687ad2c01e
font_01_sfnt_off0000cae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE8 14504 bytes
SHA-256: e24366046faf20838f11d2dfcfc6181caa9d9626a9c31c350f140362f23b6171
font_02_sfnt_off0000ef0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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