Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac384644afb39c7…

MALICIOUS

PDF

78.7 KB Created: 2021-09-09 13:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8f2ff1231c9eecef11245b81992bb47b SHA-1: 6b6af8ed7e7254df7990f1b789f7765bd1788551 SHA-256: eac384644afb39c7934d0a429404f5ee6b3ae01348d9b13504c21cda1e7e1476
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple external URIs and a raw IP address link, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs are typical of malware distribution or phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://queure.ru/uplcv?utm_term=nba+live+mobile+cash+hack PDF link annotation
    • https://geloracinta.com/contents/files/dazomomusizoloni.pdfIn PDF document text
    • https://justbuymeds.net/userfiles/file/boleri.pdfIn PDF document text
    • http://monarchiaerembolt.hu/tmp/36851327201.pdfIn PDF document text
    • https://labelmarket.pl/data/file/gosigawuburalavosuralum.pdfIn PDF document text
    • https://ymy-tea.tw/upload/files/38157126010.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/55aa46c49ed495c76ad00856a2992721/55236332171.pdfIn PDF document text
    • http://swaptoys.org/ckeditor/uploads/files/52977534555.pdfIn PDF document text
    • http://safedoorsystems.com/cmsimages/file/sojosazulixilam.pdfIn PDF document text
    • http://szkolaprywatnaleszno.pl/userfiles/file/47453838178.pdfIn PDF document text
    • https://highlander-inn.com/assets/userfiles/files/tepuvituvivuxejubogawulav.pdfIn PDF document text
    • http://italiangreyhound.pl/img1/userfiles/file/43807298088.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202109071019279593.pdfIn PDF document text
    • http://thai-apsproducts.com/file_media/file_image/file/16636151606.pdfIn PDF document text
    • http://topliving.sk/userfiles/file/61007661803.pdfIn PDF document text
    • http://alwaysshine.com/fileimage/file/2179460863.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/nilimikijopezarodixifuj.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/38797632038.pdfIn PDF document text
    • https://egyediajandekotletek.hu/mvc/userfiles/file/laruwopowufiw.pdfIn PDF document text
    • https://siriusdynamics.com/assets/uploads/files/gazaxalovatavinuril.pdfIn PDF document text
    • http://178.62.148.222:300/ckeditor/ckfinder/userfiles/files/zoguwafotegelezojebiz.pdfPDF link annotation
    • http://hypotekaprezamestnancov.sk/res/file/fekoselaledalokixe.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/161379dde7cfc9---nirozudasilesefun.pdfIn PDF document text
    • http://constantcontinuity.com/membership/data/files/39394269920.pdfIn PDF document text
    • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/21400970493.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_off0000cb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE320 10468 bytes
SHA-256: fff94c75881fa051c6b286e6e35baaa8f54f8f303b783a3b019efae9cc27ee3b
font_02_sfnt_off0000faf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF1 19400 bytes
SHA-256: 6dc903ab1571a72d7b6c85fb02df0b099d48c6bf4c234ec234b744ad3afc7502