Malicious PDF — malware analysis report

Static analysis result for SHA-256 81856e658e55a3e9…

MALICIOUS

PDF

97.3 KB Created: 2021-02-27 01:31:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c72ef94a5589a9f2cbedad2a40fab558 SHA-1: 5a6d9dad3e91791e5140f8acbd0baeae86201128 SHA-256: 81856e658e55a3e9b11d5bc521a74d5e654b55d696f5d92a9c5f494848916742
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://jumiwimov.ru/strik?utm_term=python+data+types+and+data+structures+ppt PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5fcc24de518f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383449/normal_6029dd79b45ff.pdfIn PDF document text
    • https://cdn.sqhk.co/nuponoviva/cgh5idI/mubinefipasatubu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kewakuko/brand_authorization_letter_format_in_word.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/nys_pistol_permit_renewal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/mvc_interview_questions_and_answers_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/latug.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/74246296699.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/tugitibogujizeduzuma.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/bigedisezumataxo.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/25762931272.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/womabevadekaleserumemube.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/4077813946.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/careless_whisper_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/arduino_programming_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/guxanesexurafizumune.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/how_do_you_get_a_free_phone_from_metropcs.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE6 11376 bytes
SHA-256: 837ee709d80979e9b4987a6666b5b15d83f2d212ca54b940857a601249a41181
font_01_sfnt_off000131b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131B4 5068 bytes
SHA-256: 1c289dfaa5864e3a71c9921fda7d449b28a0a4f38ce3da260101e30116d8cf30
font_02_sfnt_off000142e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142E1 11000 bytes
SHA-256: 9d390bc7d40d678cabcc5ea54f7f9a063ccc5510e4b705c68ccae8ce62295970
font_03_sfnt_off000168b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168B5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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