Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5dc91b72ff8d813…

MALICIOUS

PDF

82.5 KB Created: 2021-02-13 14:15:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f05d76989b7b6833aa403ef853246d57 SHA-1: 15dc4276ac63917bd4426d36ac1110b5f526c711 SHA-256: d5dc91b72ff8d813e658f373e91a78f649594820cd6392b8922ccd74ba4e82fd
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, forming a link farm, and one of the primary links directs to a URL associated with software downloads. This suggests a phishing or malware distribution attempt, masquerading as a search result. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or trojanized document.

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://maypoin.ru/wb?keyword=adobe%20premiere%20pro%20cs6%20trial%20version PDF link annotation
    • https://gejowarog.weebly.com/uploads/1/3/2/7/132740172/cc65612255616.pdfIn PDF document text
    • https://nekemobo.weebly.com/uploads/1/3/5/3/135323096/a594aa.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/K5mjizA/freezero_mod_apk_download_android_1.pdfIn PDF document text
    • https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/a9f75802f9dc70.pdfIn PDF document text
    • https://nukanomipixi.weebly.com/uploads/1/3/2/7/132740264/9168d396be1a.pdfIn PDF document text
    • https://cdn.sqhk.co/patemugimej/idjdigK/school_of_dragons_gameplay_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/pgghg8j/movies_to_watch_on_netflix_2020_october.pdfIn PDF document text
    • https://jematujevuzonip.weebly.com/uploads/1/3/4/2/134235480/9029532.pdfIn PDF document text
    • http://zawotagulokexa.iblogger.org/lavoxadoguvuripojuliwikaj.pdfIn PDF document text
    • https://pelabomorifij.weebly.com/uploads/1/3/4/6/134628360/d0bbebda1.pdfIn PDF document text
    • https://bozaxadoduzake.weebly.com/uploads/1/3/4/3/134306622/fajugasawewonax-zojowor.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/xukanomarexumu/guided_meditation_gregg_braden.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/blind_sql_injection_cheat_sheet_oracle.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/microsoft_bizspark_software.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/pedemiluvevezotuzet.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/advanced_grammar_quiz_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/29629086718.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD6 5560 bytes
SHA-256: cf06f134e9d880ca5679be520edafc907a8be4b141f8d5e2891b77639fa0bdda
font_01_sfnt_off0000f2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A8 18672 bytes
SHA-256: 34068e4e430f2c5b21c61913df7b1991cca4fb73b45b6c8a4df2457b8897d8c1
font_02_sfnt_off00012233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12233 17608 bytes
SHA-256: 1f8ae800f1ea18bed6b182f2c2ddabdc2be367227e717209d0e93ed657e1f5ca

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