Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3807011f99eb65…

MALICIOUS

PDF

74.6 KB Created: 2020-12-11 08:44:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2d5af1e3a259e5dbb25dd7f0b671dfa6 SHA-1: 282d83271958ca8ddd2ff2287aa6679174190ef4 SHA-256: 8b3807011f99eb65ca7cf5aa0d0e73c7dc1d88afe6e220cce281306e37d5771b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/aws?utm_term=template+kendo+grid+jquery'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://cctraff.ru/aws?utm_term=template+kendo+grid+jquery In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_5f99c491563ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375889/normal_5f90c20d84cc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382781/normal_5fcc5345b74a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415740/normal_5f961bd62b634.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413002/normal_5fcb58861ac5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f895faec144b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465703/normal_5fd202b62f9f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b3f6533-4fad-4428-bd16-6112885801e1/81057251470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef42b797-67c9-4d09-a7f5-e1910b2dd04b/edwin_m_knowles_china_patterns.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4cc2bc819f1cf4cee314/1606372568649/jennifer_doyle_ucr.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/blackberry_leap_install_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13cf30a2757459be51ac1/t/5fc36f6ce6d49a06bbfe7dd0/1606643565626/irs_tax_form_8879_for_2014.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc537ce3398ff75154a1c50/t/5fc8b105b0f45b2a3d2b8472/1606988038069/75807889380.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12a1c9698b02c7f224c6f/t/5fc3ee9261e25426e1b1571b/1606676114291/dimension_high_school_episode_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faa6ca6f-659b-49b5-a8ea-f1331a559bdb/sumegazudepegupukegob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc389629955c744b54c2322/t/5fd1f4cb871f8c6e59602215/1607595215905/9th_class_application.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c98a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC98A 5416 bytes
SHA-256: c2b1f490165051fe1dd258fc7e6a3dfc15ddf01681b1f4454e21ee5a6bfea2fd
font_01_sfnt_off0000dbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDF 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000e743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE743 11412 bytes
SHA-256: e43da6beba65417714a0582088e852abf0e2733d42ff94e7376158c437df7b63
font_03_sfnt_off00010e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E70 3792 bytes
SHA-256: 412e272cf34fdcba1790812888aa714fad9cd000f3047c5cf60e2659b75b4012

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