Malicious PDF — malware analysis report

Static analysis result for SHA-256 6452c18db37f9fa8…

MALICIOUS

PDF

78.6 KB Created: 2021-02-28 13:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f7c974e7dc443f99953c34b7f5b41ef3 SHA-1: 81f4c40c947364262f1ec6b44a334010572e8893 SHA-256: 6452c18db37f9fa8c53957942a1550f3a1f9da770ae14ebd0053b666427a018c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'dugedepap.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

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://dugedepap.ru/award?keyword=who+invented+the+phone+and+why PDF link annotation
    • http://bigwin-1xbet.fun/care_home_operations_manager_job_descriptionlym59.pdfIn PDF document text
    • http://tukazijib.22web.org/american_football_world_cup_apk.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/navubuxekusi.pdfIn PDF document text
    • http://fovikoxesaweziz.medianewsonline.com/35457108001.pdfIn PDF document text
    • http://sevoxotedeki.medianewsonline.com/how_to_get_a_family_doctor_in_winnipeg.pdfIn PDF document text
    • http://dompodklyuch.com/2013_hyundai_santa_fe_repair_manualyizf7.pdfIn PDF document text
    • http://italysummer.space/fazigefiresaxibote1zx7v.pdfIn PDF document text
    • http://pedumerik.sportsontheweb.net/fifty_shades_freed_full_movie_on_netflix.pdfIn PDF document text
    • http://skidki-day.store/how_to_find_the_magnitude_of_gravitational_forcejfh1y.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/likadojivivofu/xodalexobuxosizitiwo.pdfIn PDF document text
    • http://gugawojakopa.rf.gd/fate_go_chaldea_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/dudotaxijudimugil.pdfIn PDF document text
    • http://tivozabalilibo.rf.gd/28884546180.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/lafasixenaz.pdfIn PDF document text
    • http://kevulapoxokimif.rf.gd/64000457105.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/padorisapudibexuse.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_off0000f8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E4 5008 bytes
SHA-256: 186a5148eb312f861743c12e90a42d4fcfeb1eafa1e7ffdc129e2a318f4b1eec
font_01_sfnt_off00010a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A0F 10440 bytes
SHA-256: 60890e3f7daa7ad3c4fd99676e6b93febecd1eab5340b3997ac8199bd046930e

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