Malicious PDF — malware analysis report

Static analysis result for SHA-256 71bc66526d5e6707…

MALICIOUS

PDF

75.1 KB Created: 2021-03-16 04:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc9939eea8397c9fe74793a24ee1cfd0 SHA-1: 95876c8e56035efd518e40375898f913fc7546d9 SHA-256: 71bc66526d5e6707e9856afa3538969657c59ec20b3caff5762aa8340bbde006
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search results, further supporting a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://nipisod.ru/wix?keyword=four+texts+on+socrates+pdf
    • https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/tawajel-xofulizele.pdf
    • http://english-10.site/dream_a_little_dream_of_me_sheet_musunrx8.pdf
    • https://garovinarabibaf.weebly.com/uploads/1/3/5/2/135293384/xusivudetidide.pdf
    • https://cdn-cms.f-static.net/uploads/4409244/normal_5fd90d7cc7570.pdf
    • https://cdn-cms.f-static.net/uploads/4470685/normal_6033ab8a7380e.pdf
    • http://hempmap.ru/baldurs_gate_3_multiplayer_issuesuqldz.pdf
    • http://itwow.info/92666357814xypic.pdf
    • http://help-feedback-amzn3.xyz/41985133996q2t9c.pdf
    • https://zikegebuner.weebly.com/uploads/1/3/4/8/134856814/jamugikosutaxej.pdf
    • https://cdn-cms.f-static.net/uploads/4413361/normal_603af47ff03ed.pdf
    • https://static.s123-cdn-static.com/uploads/4387408/normal_5fc9eba86f818.pdf
    • http://meinekarten.best/bamboo_cot_sheets_australiapzzo6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ponuruv.rf.gd/esma_ucits_guidelines.pdf
    • https://s3.amazonaws.com/lekizopiloref/20392444736.pdf
    • http://vawomebez.rf.gd/28096979646.pdf
    • https://s3.amazonaws.com/povodijirig/marlin_30-30_model_336_accuracy.pdf
    • http://sezulezaba.rf.gd/outlander_diana_gabaldon_series.pdf
    • https://s3.amazonaws.com/dazuxujepov/argus_media_annual_report.pdf
    • http://zonadomafi.rf.gd/away_in_a_manger_sheet_music_satb.pdf
    • http://delezomixotu.epizy.com/artificial_intelligence_a_modern_approach_3rd_solution.pdf
    • https://s3.amazonaws.com/pululusodogi/the_lying_game_tv_show_cast.pdf
    • http://remavamabemasa.rf.gd/nibimelip.pdf
    • https://s3.amazonaws.com/gumagabu/25989222838.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e861.bin
210dfed06ff925f79f320c6c08c8f2e828dca625468868f0ae223c65bbad9679
pdf-font-stream PDF embedded font (sfnt) at offset 0xE861 5140 bytes
font_01_sfnt_off0000f9f8.bin
b943c8ea7f887706e5313d2ef5c3688af2246055801ee9a888951d5444b976f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F8 10756 bytes