Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0e657dbf880cb4…

MALICIOUS

PDF

78.2 KB Created: 2021-03-24 06:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df9407cfc029413705cda511a70f92b8 SHA-1: 1cf0617559aa9d4685e18cb046df5e154690fe14 SHA-256: 0b0e657dbf880cb4d11234c70b6e0e60744a955528d949a627954604007f30be
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ClamAV detection and ML classifier strongly indicate malicious content, specifically a phishing or trojan variant. While no scripts were explicitly extracted, the PDF structure and numerous external URLs are indicative of a phishing or SEO manipulation attack.

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/aws?utm_term=jason+and+the+argonauts+original+movie+poster
    • http://bit-ipo.ru/61439277070o3khr.pdf
    • http://bukuxojunuz.mypressonline.com/airway_assessment_anesthesia.pdf
    • https://cdn.sqhk.co/fowipovoji/gfkJkjc/66164385387.pdf
    • http://simopuvoramawu.mywebcommunity.org/29960764644.pdf
    • https://cdn.sqhk.co/vuramufef/degigdb/gesulifevar.pdf
    • https://cdn.sqhk.co/fuluzagile/fahbhif/associate_certified_analytics_professional_study_guide.pdf
    • http://sivolejujivozul.scienceontheweb.net/bible_study_topics_tagalog.pdf
    • http://supsun-aero.com/id_like_to_teach_the_world_to_sing_sheet_musicqvfdj.pdf
    • http://wazasoku.iblogger.org/ubqari_magazine_april_2020_download.pdf
    • http://fakts.design/gezosefigebefeperckgki.pdf
    • https://cdn.sqhk.co/jipogidara/X7gjjhi/logaj.pdf
    • http://ryursew.space/nonlinear_ordinary_differential_equationsqop76.pdf
    • http://wulutapebime.getenjoyment.net/redonavuduvatu.pdf
    • https://cdn.sqhk.co/letarezetap/CDWhbqq/bamogapewinifusofenarilog.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4b27f77d-7e52-4d35-ad10-a15f360d21ba/wugovowodaterenotoziji.pdf
    • https://uploads.strikinglycdn.com/files/4f5ad7ad-1a22-4c1a-a4c1-bbb46ec2e779/jototodaduwiwone.pdf
    • https://d5e9a058-cbdc-4968-ba72-30cdbf1e36a3.filesusr.com/ugd/9cfd0a_959f0c97a23d4a729ee31fc6ccce96cf.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ddd4277b-958a-405c-bc92-542ff7909741/66045855562.pdf
    • https://ff9dba89-6132-4485-99c2-ace8a2453124.filesusr.com/ugd/c3f59f_498350d296e44d48b8eb162ff567a305.pdf?index=true
    • https://2dc0326d-ac60-47d8-bf46-f2dc9d334570.filesusr.com/ugd/21b4a7_fdd4f916012b405590ac99cb113d1174.pdf?index=true
    • http://tobexemekisedex.epizy.com/i_file_sang_excel_online.pdf
    • https://96ea5dd8-6962-4d57-b29c-fb233a715e3b.filesusr.com/ugd/ac3463_885eec88f4f043d4a6a8ade762d9832b.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f380.bin
e6591582e8534484f2f3af5a3cc2de6a1f04898017a08e8d3facbbc98f072de5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF380 5424 bytes
font_01_sfnt_off000105cd.bin
6da823d39e32dcade0c8d8155d42cb811d40fd00d4e954f48b562fe017770475		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105CD 11176 bytes

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