Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee3348aba664ea9…

MALICIOUS

PDF

114.7 KB Created: 2021-01-18 19:03:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 99b1867c4902e90f8305bb4f201b384d SHA-1: eac27ec6df932ace2f1c7377d2ccda07422beceb SHA-256: fee3348aba664ea94a20f1be01a607c19e89018bd6ed3b2f9e642fd61daa1c64
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which are to PDF files, suggesting a link farm or a phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically a phishing trojan. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards malicious content designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://trafficel.ru/123?utm_term=our+eyes+are+watching+god PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425237/normal_600575f42de13.pdfIn PDF document text
    • https://site-1173505.mozfiles.com/files/1173505/83343227209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_5fc05c8e87994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5fbcb17b3bcf1.pdfIn PDF document text
    • https://site-1171826.mozfiles.com/files/1171826/teacher_guidelines_pe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_5fa42201b2376.pdfIn PDF document text
    • https://site-1212439.mozfiles.com/files/1212439/sozagobezodizaxegupok.pdfIn PDF document text
    • https://site-1175937.mozfiles.com/files/1175937/hidden_agenda_ps4_game_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404529/normal_5f931edf806c2.pdfIn PDF document text
    • https://site-1195811.mozfiles.com/files/1195811/beauty_plus_camera_online.pdfIn PDF document text
    • https://fuwupizur.weebly.com/uploads/1/3/5/3/135390256/nozufaripenelinudot.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/zuxime/acb_full_form_in_police_department.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/nodamoxajenoropepefeb.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/wind_staff_upgrade_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/kifebakalositeb.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/nafuforivomu.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/software_functional_requirements_template.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/fort_ap_hill_mwr.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/betonutelemidelediguned.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_off00018571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18571 5388 bytes
SHA-256: 713964c15a2c165dce01cb8f92ab5e5b8eb6bd38a605fab905536ea7c0da0319
font_01_sfnt_off000197d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197D2 10968 bytes
SHA-256: f263e98dd630b0c0c492c3288fa421bbdd863432b728ea6549932bfeb73d61bc

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