Malicious PDF — malware analysis report

Static analysis result for SHA-256 07baa909b99c9377…

MALICIOUS

PDF

82.7 KB Created: 2021-09-14 07:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b4014d91bf041a3b4a92d7e78c40b551 SHA-1: fea2a2989c9673fa381fa0b04aa10997704ee8ef SHA-256: 07baa909b99c93770bb806de2285d3bdaa348a3cf77ef5c086acb55dae4e822f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous external links, including one pointing to a raw IP address, indicating a malicious intent to redirect users to potentially harmful sites. The ML classifier and ClamAV detection strongly support this assessment, suggesting the file is a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://csp-pub.com/stockages/files/90770360020.pdf In PDF document text
    • http://dydlhx.com/upfiles/file///31800091367.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/17284411922.pdfIn PDF document text
    • http://studiopetrilli.it/userfiles/files/jenezusapiji.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/6184781731f1a32d8f63581954ed2658/70900736866.pdfIn PDF document text
    • http://ozt.zielonetarasy-cieplice.pl/uploads/userfiles/files/48881426005.pdfIn PDF document text
    • http://bioaec.com/userfiles/files/77954601279.pdfIn PDF document text
    • https://suksesunited.com/contents/files/84040257999.pdfIn PDF document text
    • http://athaj2.specialty-match.com/upload/files/pizetarubibizij.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/xaberu.pdfIn PDF document text
    • https://comtraining.cl/userfiles/files/99663144743.pdfIn PDF document text
    • http://wwstationery.com/files/file/kitupagivapaj.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/tuvenirinox.pdfIn PDF document text
    • http://zatoodesign.com/userfiles/files/9588566404.pdfIn PDF document text
    • http://2018.letnifestiwal.pl/ckfinder/userfiles/files/pukefafowumomokujejexi.pdfIn PDF document text
    • http://dailyxedayhang.com/userfiles/files/mudowisowoji.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bef8e88afc---mesurujupipavotopu.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/fuzijebafajit.pdfIn PDF document text
    • https://yumasri.com/assets/ckfinder/userfiles/files/riwiremonemazuligopifemor.pdfIn PDF document text
    • http://tufaghanafc.com/js/ckfinder/userfiles/files/lasesusumatevujeso.pdfIn PDF document text
    • https://kebecelectrique.com/upload/editor/file/bolagedobinenexipiwusa.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c44a27e91---13365356267.pdfPDF link annotation
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=the+conjuring+3+free+moviePDF 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_off0000dddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDB 18212 bytes
SHA-256: fd279f4b53ef807fb743aac34d8b8e4fcc020562a3742aba98ac394288d11e28
font_01_sfnt_off00010d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0F 10740 bytes
SHA-256: 7c66ce78d11ce7f640f55793fa05faa65994343e8e03d09e17b4177b0673445f
font_02_sfnt_off00012590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12590 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1