Malicious PDF — malware analysis report

Static analysis result for SHA-256 3205c5969e60e567…

MALICIOUS

PDF

83.4 KB Created: 2021-09-18 20:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 20c2ed57c433108bf4645161a8c0f257 SHA-1: 262da199e34c982b856467cabf59655c6d097a12 SHA-256: 3205c5969e60e567d363323711b047ac4ab4d05a201c73aa6134e75e082ce780
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly suggest an attempt to trick users into visiting harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

Heuristics 6

  • 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.
  • 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://smidgel.ru/uplcv?utm_term=devin+haney+fight+live+stream+free PDF link annotation
    • http://odra.cycling-recycling.eu/imgturysta/files/48291831546.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/25014455419.pdfIn PDF document text
    • http://vce34.ru/attachments/file/zafuvegimus.pdfIn PDF document text
    • https://quangtriasianwindow.com/uploads/image/files/wanofibok.pdfIn PDF document text
    • http://vidiniaibreketai.lt/userfiles/file/vivonixofudawu.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/b6eb78e538cbdccb2bbf2720f9d63d78/rakuzofejawezuba.pdfIn PDF document text
    • http://rideco.hu/upload/file/wimaladorolowu.pdfIn PDF document text
    • https://calson.garment-pro.com/ckfinder/userfiles/files/23397188964.pdfIn PDF document text
    • https://gtijsr.com/userfiles/file/30329756488.pdfIn PDF document text
    • https://doctornhospital.com/banglanews24/editorsfiles/files/xasewetefegegosaz.pdfIn PDF document text
    • http://szhlfz.net/upload/1315999774.pdfIn PDF document text
    • http://bio86.fr/userfiles/fichiers/tanavazerorebe.pdfIn PDF document text
    • http://lycee-elm.info/userfiles/file/63449934013.pdfIn PDF document text
    • http://bkmarine.net/ckfinder/userfiles/files/1631402398.pdfIn PDF document text
    • https://extremedriveline.com/ckfinder/userfiles/files/96138053566.pdfIn PDF document text
    • http://khachsansapa.vn/webroot/img/files/61893392203.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613354a64b3a6---gonopoletibuzok.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/161368c411bce6---13613968319.pdfIn PDF document text
    • http://old.bgk-meshkova.com/ckeditor/ckfinder/userfiles/files/kidenafuteja.pdfIn PDF document text
    • http://metafelix.it/userfiles/files/sutusajutegetajilu.pdfIn PDF document text
    • http://anhhieu.vn/hinhanh/file/somubizuvutegavawefit.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/36661111429.pdfIn PDF document text
    • http://candientushinko.com/images/file/mudekakubewizerenu.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16138318f41fa5---47931850685.pdfIn PDF document text
    • https://pr-dienst.ch/file/mujamipesujebizavaronowif.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/kaxebilixosun.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_off0000e242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE242 17360 bytes
SHA-256: 570b7f5f408f6507577ea4d24ae794e229f01ca8bcd12275a582b4b9f0f49f99
font_01_sfnt_off00010f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F43 10720 bytes
SHA-256: b48a38d57003e0fb332dba692d67133f3cab05dd780d6fcc8671c1e7a7392dd8
font_02_sfnt_off000127b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1