Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba8ecc11d1c03fe…

MALICIOUS

PDF

67.8 KB Created: 2021-02-17 19:10:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 70d888a43ed5881a6aa776d32bed21eb SHA-1: ad52803cc29fd5ca0bc0964ec30a79bc63c8150b SHA-256: dba8ecc11d1c03fe827b8df22e5b15637fe6231f69243d8bc3fc3153ed2c8063
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. It contains an external URI pointing to a suspicious domain, likely intended to host a phishing page or malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/strik?utm_term=fender+champion+40+manual+espa%25C3%25B1ol PDF link annotation
    • http://sandiego-podcasts.com/cancer_pulmonar_de_celulas_no_pequeasuqyzx.pdfIn PDF document text
    • http://hydraruzxpnew4af.exchange/washington_football_team_schedule_and_results13wr2.pdfIn PDF document text
    • http://zotonurapad.22web.org/babipinuronumelobi.pdfIn PDF document text
    • http://euromarket.pro/wanekoshtcsl.pdfIn PDF document text
    • http://xozonline.ru/12450899163mi8vh.pdfIn PDF document text
    • http://slimitalia.space/metro_paris_mapa8lfs5.pdfIn PDF document text
    • http://igonlinesupport.com/kaiser_permanente_careers_log_inpqa30.pdfIn PDF document text
    • http://gufutaca6.xyz/84187951314skddf.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/tarizirefevifab/degewijanolamanosatiki.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/34930842981.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/cd_cover_design_template_photoshop.pdfIn PDF document text
    • http://wimosatemegof.rf.gd/30819832868.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/telecharger_atlas_anatomie_humaine.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/saturation_test_current_transformer.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/free_stickers_line_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/shatta_wale_amount_video_free.pdfIn PDF document text
    • http://rubabup.epizy.com/jurnal_biota_laut.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_off0000c7a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A7 5712 bytes
SHA-256: b5fc62278efe6e746e53ddf96997e1edc1bae58fbcfa5979b99037db3933a72e
font_01_sfnt_off0000daaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAA 11324 bytes
SHA-256: 9732c219a613b8ff39766425db3bf35ba8f6150ee99be069f3ad7c3f9389e48a

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