Malicious PDF — malware analysis report

Static analysis result for SHA-256 11920a20ab3ed01e…

MALICIOUS

PDF

77.2 KB Created: 2020-12-18 04:41:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 30d3afc19873ca88528c8f6e0ec8a90d SHA-1: 077b8bf730ae12a51472248a361fa34eda24f779 SHA-256: 11920a20ab3ed01e9e19f935e442151ca688794847401baf12b6f8580ac118ed
214 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, and it contains links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'Guitar Hero on PCSX2', likely to trick users into visiting the malicious URL. The presence of numerous external links, including one pointing to a file named 'kaspersky_antivirus_trial_version.pdf', indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://traffking.ru/strik?utm_term=guitar+hero+on+pcsx2 In PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/608d72.pdfIn PDF document text
    • https://gavedomosuzutu.weebly.com/uploads/1/3/4/2/134234743/cf61e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/kaspersky_antivirus_trial_version.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1771924b06a7eb3033110/t/5fcb1c459cf56e0e8b0c50b5/1607146566383/heroes_of_order_and_chaos_offline_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/portfolio_keeping_a_guide_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/powerpoint_templates_pro_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0be3da5c-a5e6-4935-9932-f2586071edab/equivalent_ratios_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41cf4b4e-7894-409a-9c37-fa3d14ef7797/63378122071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9fd008c-df80-43eb-b3a1-648e2c5c6fca/1460191354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25b9e138-450b-4a13-aeb1-3b5807670208/daxifatitemudam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3f2d65d-1a34-4fb3-bd06-a8ad9e4294f6/57605271447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8165bc3-30ec-45cd-b6e4-21e80fb44e79/fizujorusowojipe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27a90c14dfd36fefb8bc0/t/5fccb834a87f9f1b19d5bbd4/1607252021801/wefenixumafukox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC299 14836 bytes
SHA-256: 7f7d4a88fb1f99a62df6d81e66111ae2d8d757efff31eeb1f28dd6fd48c5726f
font_01_sfnt_off0000efd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD8 5220 bytes
SHA-256: 28f338541e22b33a1ca7c6e9598fbfbca5f30998e11c0766593727cd35bfa1df
font_02_sfnt_off0001019b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019B 11328 bytes
SHA-256: 6d00d617aa95e258e5d02304eaedae4b9266f90399e96f44fd6d708a350abd21

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