Malicious PDF — malware analysis report

Static analysis result for SHA-256 48eccec8080ea96a…

MALICIOUS

PDF

82.5 KB Created: 2021-09-17 15:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e05d6ba7fb1d9b842685d06e2ca6023b SHA-1: ac2c1b0481cc1ccedb82c0004e325433d5f5c611 SHA-256: 48eccec8080ea96aa10eb201d2d3a73045276eb6c36251ea714261f14fc8930e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of numerous links suggests a broad-based lure campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://chcial.ru/uplcv?utm_term=the+dragons+of+blueland+pdf PDF link annotation
    • http://satyavnetworks.com/fck_upload_images/file/vozaxevijifowoxemivowiko.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/file/72100783011.pdfIn PDF document text
    • https://www.totspotdaynursery.co.uk/ckfinder/userfiles/files/12704641429.pdfIn PDF document text
    • http://westhollywood.ilovepokebar.com/uploads/files/xinofawaxutefeganegigi.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/40771494498.pdfIn PDF document text
    • http://nguyenthaotech.com/upload/files/63543849428.pdfIn PDF document text
    • http://tlumacz-francuskiego.pl/userfiles/file/jafuzetikil.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/161344f10eb965---69919942395.pdfIn PDF document text
    • https://vjlabor.pitscovn.com/uploads/Upload/files/41586955712.pdfIn PDF document text
    • https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/pujabobirav.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c018402cb6---saxevutenisagewurux.pdfIn PDF document text
    • https://gulf-rope.com/images/bulk_images/files/timipugipisuludebo.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/pr8i72ngl7km7590ub3p9k3pq2/12298547897.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/0a3dd78264499702f8c43ff94a7f1ad1/30001024507.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16135ad5f826d1---sibemapedor.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141c2354f975---gukiviserakoluxidaxipofa.pdfIn PDF document text
    • http://hiniceshine.com/upload/fofak.pdfIn PDF document text
    • https://probidjp.com/ckfinder/userfiles/files/20210911_193440.pdfIn PDF document text
    • https://atlantidegattico.it/file/komavarimobofami.pdfIn PDF document text
    • https://stephan-kratt.de/data/reiterhof/userfiles/file/mulepum.pdfIn PDF document text
    • https://jager-ig.tw/up_photo/file/rexesivaperosadutekajup.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/161322dbbbd4fe---88068847939.pdfIn PDF document text
    • http://risme.vn/files/87730585099.pdfIn PDF document text
    • http://illinoislivestock.org/userfiles/file/mirumovegefadini.pdfIn PDF document text
    • https://viktorina.ledoritulys.lt/files/mivesalajuwodagifud.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_off0000dde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE4 10788 bytes
SHA-256: f44a81c264c5bd5bd4ad391f2509c53e239a09d738f9e206d2bcf0436c20614c
font_01_sfnt_off0000f63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E4C 17828 bytes
SHA-256: dc985e973f4c7cd82e3b5334b0e26e045ae9b0fb62c4fc8096e0bf961216bcbe