Malicious PDF — malware analysis report

Static analysis result for SHA-256 0660d807ba226e5d…

MALICIOUS

PDF

83.8 KB Created: 2021-09-17 18:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 6e8283619b7eca66a58da52680798c75 SHA-1: 0a2cd6549ce6737a5b1872a3178e37f711a3889e SHA-256: 0660d807ba226e5df802b202a5bdfd4d4cdca67a19c29939c7655e804d061f5a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. Heuristics indicate this is a phishing attempt or a distribution point for malware. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://oniceh.ru/uplcv?utm_term=cricket+live+score+app+apk PDF link annotation
    • http://dieta-plus.pl/userfiles/file/27226404230.pdfIn PDF document text
    • http://elmawadah.com/userfiles/file/81844177050.pdfIn PDF document text
    • http://3colorjazz.com/fckeditor/userfiles/image/72659097397.pdfIn PDF document text
    • https://qnzar.com/files/medovupubixiberusosuwige.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/nugajubufepategedowogo.pdfIn PDF document text
    • https://egyediajandekotletek.hu/mvc/userfiles/file/69009085714.pdfIn PDF document text
    • http://vektor-bezpeki.com/userfiles/files/94697234988.pdfIn PDF document text
    • https://gdaniec.com/upload/files/welusowujud.pdfIn PDF document text
    • http://mg001.cn/upload_fck/file/2021-9-14/20210914152022345119.pdfIn PDF document text
    • https://www.orthovision-lublin.pl/ckfinder/userfiles/files/binamipatezexapibepepi.pdfIn PDF document text
    • http://potya.com/gixazukojetatatotutos.pdfIn PDF document text
    • http://mothertheresapublicschool.com/userfiles/file/36479395021.pdfIn PDF document text
    • https://maturana.cl/upload/file/588170501.pdfIn PDF document text
    • https://booking-news.hkdnracing.com/webroot/editor-uploads/files/gifemawizopekovugevaruzef.pdfIn PDF document text
    • http://asacnfservices.com/ckfinder/userfiles/files/77715782101.pdfIn PDF document text
    • https://md-bud.pl/szklo/photos/file/67023501473.pdfIn PDF document text
    • https://osiindia.org/ckfinder/userfiles/files/pomepopote.pdfIn PDF document text
    • http://imobilestore.de/userfiles/file/lunabo.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff95f79506---lusezaniga.pdfIn PDF document text
    • http://svx.su/ffile/file/zarebimibaselawivome.pdfIn PDF document text
    • http://qualityfirstservices.pro/testingsites/advantage_aviation/assets/media/file/50228405828.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/nigitimaruribitubebafisa.pdfIn PDF document text
    • http://4reality.cz/userfiles/files/63609200582.pdfIn PDF document text
    • http://haiqi-machine.com/d/files/69691211583.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_off0000e3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DD 17860 bytes
SHA-256: 8635deec4649714b6efd9daedce28400d551083c7450e00dd786f4954b2df505
font_01_sfnt_off00011194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11194 10452 bytes
SHA-256: d5dad0748f8a16f8c8b1e52e59a9f3faa7a860d07bd64a5357f6955ea3f45b70
font_02_sfnt_off0001298c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1298C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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