Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f786f625391276…

MALICIOUS

PDF

82.6 KB Created: 2021-03-23 20:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20ee4d5c94d2d2b94cb12ea698af0d49 SHA-1: 1a386b0f6493b415aa1472d0643e4ede4a6118d4 SHA-256: 29f786f62539127678318b3af612a5e13da748ab1f1f8099dad183952fc49a17
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to domains that host further PDF files, indicating a link farm designed to host malicious content or redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit PDF vulnerabilities or trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/aws?utm_term=how+to+start+a+heater+pilot+light
    • https://mujunoba.weebly.com/uploads/1/3/2/6/132682006/7939270.pdf
    • http://xexapitanegis.getenjoyment.net/71808379410.pdf
    • https://pumelagu.weebly.com/uploads/1/3/2/8/132814433/visadez.pdf
    • http://bawazofo.getenjoyment.net/37957568062.pdf
    • https://vegipojefatelon.weebly.com/uploads/1/3/4/8/134876486/e4dc9faa73.pdf
    • https://xilamebi.weebly.com/uploads/1/3/4/5/134598653/8699165.pdf
    • http://zibikudupe.mywebcommunity.org/feedback_amplifiers_lecture_notes.pdf
    • https://lepovomika.weebly.com/uploads/1/3/4/7/134701686/3899162.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fozozip.onlinewebshop.net/gebajudujatesomonumizoma.pdf
    • https://s3.amazonaws.com/leributafa/bolo_tie_style_guide.pdf
    • https://s3.amazonaws.com/belopudevuzuza/acapella_praise_music_sheet.pdf
    • https://s3.amazonaws.com/novifamigot/wutoxejuzasemukebugasaj.pdf
    • https://s3.amazonaws.com/ropidadegaxut/xaviv.pdf
    • https://s3.amazonaws.com/gofiguj/12785874217.pdf
    • https://s3.amazonaws.com/lorugipopuxe/how_much_does_a_graphic_designer_earn_in_the_uk.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/16796044729.pdf
    • https://s3.amazonaws.com/wegugus/hr_diagram_worksheet_astronomy.pdf
    • http://dawubiri.rf.gd/lg_bp250_specs.pdf
    • http://zupitatip.atwebpages.com/what_are_the_components_of_mission_statement.pdf
    • http://zuromor.epizy.com/ansys_apdl_software.pdf
    • http://kawuduzan.rf.gd/blast_off_to_reading.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f86b.bin
f44e306361e4ab07dcac1c768fa43ff4662c22d0299be997d73bdd3d5b31aa72		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF86B 4816 bytes
font_01_sfnt_off000108ed.bin
c7b9065b1bed621755558a5536aa4ebe51217678b3e7f55b1c89abf63c9c3486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108ED 11104 bytes
font_02_sfnt_off00012ee5.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EE5 4324 bytes

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