Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c42805414cbc47…

MALICIOUS

PDF

87.6 KB Created: 2021-02-17 10:50:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c2bd45923805cf54ec4e9bd755d14f6e SHA-1: 69eac2064839303423db0ee2990bc1f0b45b8608 SHA-256: 16c42805414cbc4748aeee409405bf44a9f71a98c90d414354066544cd1d7456
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=brene+brown+definition+of+integrity PDF link annotation
    • http://migarosovimopem.22web.org/55288262563.pdfIn PDF document text
    • http://kokilubowo.22web.org/matogib.pdfIn PDF document text
    • http://gododerur.66ghz.com/ccu_ka_full_form.pdfIn PDF document text
    • http://itash.space/98237742091lt5vs.pdfIn PDF document text
    • http://vengriya.space/cell_structure_and_function_class_8_mcqmedf6.pdfIn PDF document text
    • https://dadanesikukuno.weebly.com/uploads/1/3/1/4/131438481/9875079.pdfIn PDF document text
    • http://copyright-security-ig.com/capture_the_crown_in_my_heady4lf4.pdfIn PDF document text
    • http://life50it.pro/bobcat_excavator_parts_manualnz5cg.pdfIn PDF document text
    • http://xuvaguwanolinu.66ghz.com/malaguena_ernesto_lecuona_piano_sheet_music.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/jeponowon/statistical_learning_with_sparsity_free.pdfIn PDF document text
    • http://gilebufamefaf.rf.gd/numov.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/android_9_screen_record.pdfIn PDF document text
    • http://kozifina.epizy.com/best_luxury_car_brands_consumer_reports.pdfIn PDF document text
    • http://nobegik.rf.gd/compass_app_free_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/27675442747.pdfIn PDF document text
    • http://nipesuvaz.epizy.com/word_scramble_worksheets_printable.pdfIn PDF document text
    • http://zutosagu.rf.gd/pitomoralipotif.pdfIn PDF document text
    • http://fobuzepiru.epizy.com/colonic_polyp_management_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/89834864208.pdfIn PDF document text
    • http://gesulobanaxa.rf.gd/nugupakimadufunidap.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/xofojajifutusejibod.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_off00011e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E18 5036 bytes
SHA-256: a94a00df3f171c12ed4c9618c112b021c45e5db986a817703c31f7bd21f8c346
font_01_sfnt_off00012f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F6B 9912 bytes
SHA-256: ff02de2f23b0be3e234302d14b6f3bf2c7828ee083e08359726db5e4dd961157

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