Malicious PDF — malware analysis report

Static analysis result for SHA-256 3add29cc3d87f6b3…

MALICIOUS

PDF

75.9 KB Created: 2021-02-16 23:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 345d12640e85a1c7cd4da634e9b5c792 SHA-1: 5fc0c356aeb4e84401240d208b6634aa5d2341ec SHA-256: 3add29cc3d87f6b3fe7aad855f62533c9bc19524245fdd499e1a989b701c091e
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical ClamAV detection of 'Pdf.Phishing.Trojan'. It contains an embedded URI pointing to 'https://jottigo.ru/strik?utm_term=how+does+the+cruel+prince+series+end', which is highly suspicious and likely serves as a phishing lure or a download redirector. The document body, though heavily obfuscated, contains text related to the URL, suggesting a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=how+does+the+cruel+prince+series+end PDF link annotation
    • http://marinarus.space/antigona_de_jean_anouilh_gratisjnowz.pdfIn PDF document text
    • http://notdull-eng.online/child_care_aware_mn_grants_covidtdras.pdfIn PDF document text
    • http://com-signto5.xyz/steven_universe_attack_the_light_game_download_freejpd8t.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/jhhjhbY/hd_nature_wallpapers_for_mobile_1080x1920_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvutose/b7jjAjc/pigivajawix.pdfIn PDF document text
    • https://cdn.sqhk.co/wekonexiw/ighjhgE/96930132493.pdfIn PDF document text
    • http://jixoxegige.iblogger.org/58362685426.pdfIn PDF document text
    • http://rusherx.studio/total_war_rome_2_epirus_guidet2in0.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/jgjWjge/67976235846.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/sirilagewuga/kojiverota.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/batch_manufacturing_record_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/70769151169.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/vsco_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/dwarf_hamster_care_sheet.pdfIn PDF document text
    • http://borovob.epizy.com/adobe_audition_free_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/adobe_illustrator_banner_templates_free.pdfIn PDF document text
    • http://kugofabafomozo.epizy.com/cambridge_6_listening_test_4_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/harvard_referencing_guide_online_article.pdfIn PDF document text
    • http://kewoxorewozox.rf.gd/chemical_engineering_science_template.pdfIn PDF document text
    • http://gozivedelefagi.rf.gd/rupejotib.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBD 4884 bytes
SHA-256: a916a689a9c649c525619363ac6dcf6f607b1cdeb06eb00d92e2feed8b5c9bf2
font_01_sfnt_off0000ee5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5F 11028 bytes
SHA-256: 0dfde1675bfa2fb61df6fd48d72ce37423c412d2fcf9ad6d3187e67823ace411
font_02_sfnt_off000113cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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