Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69918ee496d2fa0…

MALICIOUS

PDF

79.5 KB Created: 2021-09-18 02:57:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 7697e8df2835e6f82ca6bec8a206f8ec SHA-1: 67ba6f765c5cfc5fd71e4aed62cdb7df5e73aaf8 SHA-256: d69918ee496d2fa08f25483e05097a0aa556f210c6f7123b9707f9752b4482ad
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and numerous URLs pointing to compromised websites and disposable domains, suggesting a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allytemp.ru/uplcv?utm_term=super+minds+1+practice+book PDF link annotation
    • http://www.anaja-inter.org/public/file/madovokoluwiwogaxoj.pdfIn PDF document text
    • https://associazionemusicaviva.it/uploads/file/90742603960.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/rijutopuletipakufabizaxil.pdfIn PDF document text
    • https://vico-inmobiliaria.com/ckfinder/userfiles/files/zexogu.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/xiwaxuzidoletinadi.pdfIn PDF document text
    • http://tornyanggrace.com/upload/file/85138161728.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/keluwiregejoxupetadut.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/ucmqg2ahsj2fu21k3dquamp5ph/zuwasugerawupavujosola.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/16134de093d84a---noloxekibegosiziki.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/0ua8rbborf8aauqec779nk43jc/16173267679.pdfIn PDF document text
    • http://loscogliodifavignana.it/userfiles/files/59541323648.pdfIn PDF document text
    • http://jia-longsofa.com/uploadpic/jialong151126/files/202109070455022024.pdfIn PDF document text
    • http://exosportsante.fr/ckfinder/userfiles/files/54689588334.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/walupejolawowukivuvepoxid.pdfIn PDF document text
    • https://abyway.lv/images/ck_images/files/33712475390.pdfIn PDF document text
    • http://toyotaprius-custom.com/js/upload/files/74037180151.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/9cb492efdded980f44dc193a87046d41/85007702687.pdfIn PDF document text
    • http://safiorida.dk/operatori/userfiles/file/84136428912.pdfIn PDF document text
    • http://snoman.mb.ca/ckfinder/userfiles/files/12648799587.pdfIn PDF document text
    • https://rlmahtani.com/userfiles/files/sofipuzozosapeb.pdfIn PDF document text
    • http://scvumaichiramen.com/uploads/files/zimebibosafa.pdfIn PDF document text
    • http://rubensova16.cz/files/file/jemogavegivuwejerufid.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/ke2tj1t4vp5n6rcce54ktq5mvu/xelipibijawosebiv.pdfIn PDF document text
    • https://ww150004.linebot.net/upfile/files/20210913151423.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/talufogepiruv.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_off0000c700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC700 11088 bytes
SHA-256: 5e401576e841d4eaea3b51ff7093ae63ea85e7e9ee2faae4dead743ed6946ba1
font_01_sfnt_off0000e0a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A3 21028 bytes
SHA-256: 55e3476554729d38c5db8371400544e82c0a551f11a7fd8d85bbf03998efa37a
font_02_sfnt_off00011844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11844 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1