Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40eb8b82eddf66b…

MALICIOUS

PDF

78.0 KB Created: 2021-02-27 09:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 85720885e2d5c78742cf8be542e74434 SHA-1: 97f41b4fb641e06cea6229b57c57180dd2424f6d SHA-256: f40eb8b82eddf66bc7151b94f4f0d8c7f20105767835eb3f124ea3b2f6451334
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 0.9998

Heuristics 4

  • 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://golowaki.ru/123?utm_term=four+veronica+roth+summary PDF link annotation
    • http://rexonina.medianewsonline.com/41965088726.pdfIn PDF document text
    • http://zekinaperobivak.22web.org/lepusetasimavejafi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480402/normal_60112e4368cd6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382948/normal_5ff82c222cde4.pdfIn PDF document text
    • http://jibitivi.66ghz.com/android_action_bar_back_button_listener.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393511/normal_5fe632a35352a.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/cold_calling_techniques_by_stephan_schiffman.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476288/normal_600c75d78a75f.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/lupuvogotog/11307135475.pdfIn PDF document text
    • http://gukupexokopiwug.epizy.com/financial_accounting_mcqs_with_answers_doc.pdfIn PDF document text
    • http://fepaseweg.epizy.com/71380210455.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/30681231679.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/jazz_combo_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/beder_meye_josna_full_movie_720p.pdfIn PDF document text
    • http://sakikuzugodo.rf.gd/mcgraw_hill_algebra_1_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/98652645965.pdfIn PDF document text
    • http://rugiwixet.epizy.com/tropico_4_android_apk.pdfIn PDF document text
    • http://pavemamixazose.rf.gd/96011492917.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_off0000f60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60D 5124 bytes
SHA-256: 641e280ba4240d499a7ef734be50a3229585162cd5f91277072c194c566db2d1
font_01_sfnt_off00010762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10762 10288 bytes
SHA-256: 07555c9fe9741ed8b130955dae72cf09515094a36cf3c9fee93fed1b5c340e7e

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