Malicious PDF — malware analysis report

Static analysis result for SHA-256 327a7242b390e527…

MALICIOUS

PDF

76.3 KB Created: 2021-05-17 03:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f40ef4356e8947cac9b0c90a39768447 SHA-1: 9c3e82b6f00b843dfd0ede8510fe394a7f268e02 SHA-256: 327a7242b390e527c682a5af3f680191d1e3b13d86ef2d7ee4a946d26a597277
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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://yafferge.ru/strik?utm_term=is+there+a+sequel+to+then+she+was+gone In PDF document text
    • http://novofikupeneda.mywebcommunity.org/zewopunexugul.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/sadikanovelosesuked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444102/normal_60493a51d7f2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403415/normal_6043dd0fcdd81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446374/normal_601747ff6b534.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fefijenaxub.rf.gd/biology_notes_for_railway_exam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/064fc838-5120-412b-a06e-4c4fc55ca84b/bugirikijinuwekena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73121a3b-ec62-4fff-870c-32ebfc28f7ce/55670987542.pdfIn PDF document text
    • http://timadulikojig.rf.gd/consonant_vowel_blends_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/basic_linux_terminal_commands.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/data_management_tools_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54134ed-9de1-4d91-b4ac-0bc9bbfaf210/mumiwavenax.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/exploring_science_9a_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/t-test_one_tailed_vs_two_tail.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/reloz.pdfIn PDF document text
    • http://xavitubipuru.rf.gd/which_of_the_following_is_best_example_of_peripheral_route_persuasion.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/pujefajugewaseliwalew.pdfIn PDF document text
    • http://wiguzod.rf.gd/92267659785.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_off0000ec60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC60 5104 bytes
SHA-256: b146b241e7030ca05f4310fab88980324fe863b9bc7ce2949447172d2f5228ee
font_01_sfnt_off0000fdc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC6 10676 bytes
SHA-256: 906f7518517cf2e2d0585ac36ce0f8861328b7b456f49062139c6aafaf7be8f0