Malicious PDF — malware analysis report

Static analysis result for SHA-256 17119da6096c3dfe…

MALICIOUS

PDF

74.1 KB Created: 2021-09-16 23:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 182c3f7454bf78002e4c74648815dac7 SHA-1: 4b12481f96fd220802df399beaf7b2108272e6eb SHA-256: 17119da6096c3dfe337a18879e22013537351098c696c3958d38cb2ffefccb5b
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 designed to obscure the ultimate destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of a URL with 'utm_term=miami+police+crime+mod+apk' strongly suggest a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://allytemp.ru/uplcv?utm_term=miami+police+crime+mod+apk PDF link annotation
    • https://rsvforum.com/userfiles/file/1042414184.pdfIn PDF document text
    • http://tahi.hu/ckfinder/userfiles/files/79246807999.pdfIn PDF document text
    • http://baozhaopharm.com/upload/files/dumiwi.pdfIn PDF document text
    • http://cen7dias.es/userfiles/files/64572767111.pdfIn PDF document text
    • https://jajugroup.com/ckfinder/userfiles/files/xexabijiziv.pdfIn PDF document text
    • http://nhadeptannguyen.com/uploads/files/32966338475.pdfIn PDF document text
    • http://zjqzzx.com/uploadfile/file/2021091407280373499.pdfIn PDF document text
    • http://uniquehotelsolutions.com/files/others/nanetudire.pdfIn PDF document text
    • http://radio-salsa.com/php/rs/filesupload/file/53379101624.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/mufekilagatasigutolut.pdfIn PDF document text
    • http://radio-salsa.fr/php/rs/filesupload/file/zefopofiwepokavenedej.pdfIn PDF document text
    • http://frutapac.es/ckfinder/userfiles/files/vurogilewifil.pdfIn PDF document text
    • http://malerbetrieb-malanders.de/Webseite/pics/fotos/1/file/93622907787.pdfIn PDF document text
    • https://chataigne-cevennes.fr/imgs/files/85399709745.pdfIn PDF document text
    • https://svarovanijelinek.cz/ckfinder/userfiles/files/57729132018.pdfIn PDF document text
    • http://makassitools.com/userfiles/file///tubojowovasej.pdfIn PDF document text
    • https://stradatextiles.com/upload/ckfinder/files/zixixekujakuwawug.pdfIn PDF document text
    • http://festacreativita.org/userfiles/file/90705650430.pdfIn PDF document text
    • https://olivier-daulte.com/ckfinder/userfiles/files/34612123671.pdfIn PDF document text
    • http://vibrobreaker.com/files/files/18374591400.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/88395d9d907ac47680cb25929f8426e3/rowinar.pdfIn PDF document text
    • http://whipitleather.com/userfiles/file/tudajajilebevoli.pdfIn PDF document text
    • https://rajaketiga.com/contents/files/64636913427.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16142091c115db---lavifatitimebaz.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_off0000bd7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD7F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD591 17620 bytes
SHA-256: 9e76e1c44c5e56c0942e590a204cfd39f880746e67ff0ef6bd7f6d9ca422d026
font_02_sfnt_off0001032a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032A 10392 bytes
SHA-256: ac332bfceef9fcb58ab6bd94646721f81501bc6ec9e1c5e06885a1a980918d7c