Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d14e0e9683dadf…

MALICIOUS

PDF

74.4 KB Created: 2021-09-16 02:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 86a9a1e5b21ed35a48b87b20e576ee24 SHA-1: 43b3356f7febd516ff46ea0aa474e1815c31cf2d SHA-256: d0d14e0e9683dadf95685d08d8ae8ae5873311b71b99ae41224a091c8ba4f3b5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document contains a link farm that points to numerous URLs, many hosted on compromised CMS uploads or disposable domains, suggesting an attempt to obscure the ultimate destination and evade detection. No scripts were extracted, but the presence of numerous external URIs indicates a strong likelihood of redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://cke.hk/userfiles/kamome.pdf In PDF document text
    • http://chaitraglaze.com/uploads/43115514731.pdfIn PDF document text
    • http://stoka-saarlouis.de/userfiles/file/wepojigatugo.pdfIn PDF document text
    • https://kenadong.com/contents/files/vuworuxozurufixijawa.pdfIn PDF document text
    • http://goddesshair.net/upload/users/files/sowixo.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/dd6935fb5129d6aaa3b165ab59009237/87820596351.pdfIn PDF document text
    • http://duocmyphamcongty.com/app/webroot/uploads/files/82132003632.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/uq4tmu1jjoae3u5k19v457iilq/55241538540.pdfIn PDF document text
    • http://baoveantam.org/upload/files/6068549347.pdfIn PDF document text
    • https://yoimart.com/upload/file/20210901173113.pdfIn PDF document text
    • http://iccarrentals.com/files/file/29206743974.pdfIn PDF document text
    • https://alicantea.centralcms.cloud/galeria/files/52403746202.pdfIn PDF document text
    • https://find-domain.lazy-online-shop.com/app/webroot/userfiles/files/76370988545.pdfIn PDF document text
    • http://www.farmaciapenil.es/userfiles/files/wofiniviluteganoruk.pdfIn PDF document text
    • https://legend-chang.com/UserFiles/files/69761768887.pdfIn PDF document text
    • http://mcserpenti.com/userfiles/file/talaxigozewanawek.pdfIn PDF document text
    • http://venkateshservices.com/uploads/pijeg.pdfIn PDF document text
    • https://matfreklam.com/calisma2/files/uploads/sebuvemide.pdfIn PDF document text
    • http://madonnina.info/userfiles/files/wajamatekikoxowefegebexum.pdfIn PDF document text
    • http://luxmeterthai.com/ckfinder/userfiles/files/relagexebif.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/6012737c2b97f384ee77db64fa134236/xitofizelivoreroji.pdfIn PDF document text
    • http://francescasciortino.it/userfiles/files/tigugabusegozuxurileje.pdfIn PDF document text
    • http://mebelhotel.ru/userfiles/files/93002595005.pdfIn PDF document text
    • http://eminenceinc.com/userfiles/file/xatejalemax.pdfIn PDF document text
    • http://klaaswester.nl/img/file/taxebasujoro.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=the+binding+of+isaac+rebirth+android+apkPDF 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_off0000b883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB883 11048 bytes
SHA-256: a3498c36c28d003dfeb67a4aa1c97f0218895d2787a52d8405831de6564ec424
font_01_sfnt_off0000d1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DD 19564 bytes
SHA-256: e35a8a6b94c8886e69a8eec70a65a49b1cbaf68662c2d4f9f60675b6c2fbb144

Open this report in the interactive analyzer, or submit your own file for analysis.