Malicious PDF — malware analysis report

Static analysis result for SHA-256 2191a8a4c62fadfa…

MALICIOUS

PDF

62.8 KB Created: 2020-12-16 02:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: abdaf43d5244de9e2a6130004b906846 SHA-1: c455c2e8531889056dacdc88f6f2d500ce5d895f SHA-256: 2191a8a4c62fadfa3bfb1cb9a5b3aa1545be19c07a51339d8045f318a1e547af
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ggtraff.ru'. Additionally, a high-severity heuristic indicates a 'Browser extension / update installation lure', suggesting the document's content is designed to trick users into installing malicious software. The presence of embedded URLs and the overall structure strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://ggtraff.ru/123?utm_term=sorry+not+sorry+pdf+free In PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/9634984.pdfIn PDF document text
    • https://suleduzon.weebly.com/uploads/1/3/4/4/134403341/mulafoduzad.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/kukuximesuxus_fizoluwu.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/piwotezaxi_jagexeruxuzopas_luwodolakanuwo_kuvinom.pdfIn PDF document text
    • https://bijimeko.weebly.com/uploads/1/3/4/3/134327756/52191b30c4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0abc6bda9c57a97bd16fd/t/5fc10dd79d79364840b2943f/1606487511974/fodemivuxogilenejotuwejid.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eacbc14dfd36fef1915a/t/5fc0f36f4e98326c0232b611/1606480752314/domizofajijezepokonikev.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cf0dc30a162e0c520c2e/t/5fc7b51ca3696915e22f36ed/1606923548926/88843940235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21300618-4734-4720-a3c4-9eb109dde744/sanosiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9e048db-4d6c-4606-a551-858931d934b1/unblocked_games_kitty_strike_force.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf553edabee7b4406b36f/1606219096105/dress_up_american_theme.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcefd143d778404109110a2/t/5fd725bf102ca46975fcbd58/1607935424419/18692161588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b14f9d59-f3d1-491e-a4d1-effc6ef368f6/a_critical_and_cultural_theory_reader.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6606f9955c744b560c0eb/t/5fc93ab9fbc718432b017f7e/1607023290363/ninja_air_fryer_recipes_baked_potato.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB765 5000 bytes
SHA-256: 9762d237f0243fab72940750a8700e99d3314a4090cc70fbb777079f0ffccfbe
font_01_sfnt_off0000c883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC883 11976 bytes
SHA-256: 2ff3f5d6573f3b9e6b164f124fec33e8b0406c646bca570d2da8470b90423b08

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