Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aefee0f4844c6ba…

MALICIOUS

PDF

204.4 KB Created: 2021-07-22 15:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6b11a01655f82612e877572fefdbcb17 SHA-1: 03c7d4bb50ae153926cab364883fb37d16d5a2b6 SHA-256: 8aefee0f4844c6ba2142cda76fe79e1466a72b375ee15b71e45f944dd61b3a53
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised WordPress upload storage, indicating a phishing attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest it is designed to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9613

Heuristics 5

  • 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.
  • 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://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f812938291---72084529709.pdf In PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/8dcaf94df48a183fca773b6fdb8a1adc/togepixefizimifunim.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/elv24ipt5g4ea10s8f2h3c10jr/tebegimikupa.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/90156693220.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aebd92ad38e---90609447613.pdfIn PDF document text
    • https://rumahbaruku.com/contents//files/10884617591.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/9cc12e5ed650f853810f98267cf390eb/67078583724.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/2f2c980a42557f3cdbfdf8a5bfaea58b/42674467430.pdfIn PDF document text
    • http://drive4smilesontario.ca/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/13564099471.pdfIn PDF document text
    • https://iwanbim.com/userfiles/files/950272067.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/cee8d26d7dd29b354c3dd5e0bdc1a4bc/5230337400.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/gopp8j0ilrb42h840pou0sl980/monumez.pdfIn PDF document text
    • http://andrewclaymonfishing.com/clients/a/a7/a7b0d980ee28df7184f998a87a00dbd5/File/pejaboxaf.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a1f54df51---10901940417.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/hkj8v0n2u3d6c9ct75f9m3d321/fedamepivaxilu.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5de702463a---8424284078.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/b2fukt1nkki10rdl94vib0u4go/58229868414.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/d0d648ff81717ebf14f64f743aa9a333/folezemegitewotidewom.pdfIn PDF document text
    • https://fertilizerproductionprocess.com/d/files/53547854790.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7a0337ccfd---jesalekolurekowe.pdfIn PDF document text
    • http://veraschwemmle.de/fckdata/file/30744795575.pdfIn PDF document text
    • https://oykufestivali.com/ckfinder/userfiles/files/xuxijijedupil.pdfIn PDF document text
    • http://thomasgearon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vufujezeme.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e598c62634---9071186292.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=list+some+idiomsPDF 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_off0002c4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002dce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCE8 17768 bytes
SHA-256: 46da0e5fb21800ddaea194deba009d21fcdfadae7ef4b40c0d602bab37c965c0
font_02_sfnt_off00030b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B7D 9956 bytes
SHA-256: 3d7e1bd43c9b62b754622602ba41a2bfac092156d11eabcacc619f20e098c21e