Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0210ca330572729…

MALICIOUS

PDF

78.0 KB Created: 2021-04-17 10:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8831426f89f5758375aacca5dc0cacff SHA-1: e21459633987ef96717c2cafdd0a34844ca48141 SHA-256: a0210ca33057272907f71c790926a62bb45fddc3e4e1d7a35cfa97e90badf2ba
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, contains text related to a movie title, suggesting a social engineering lure.

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://xajibur.ru/strik?utm_term=the+boy+in+the+striped+pyjamas+film+watch+online+for+free PDF link annotation
    • http://mixezitubut.mygamesonline.org/apple_work_from_home_jobs_kelly_services.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480748/normal_600d7224f0e30.pdfIn PDF document text
    • https://cdn.sqhk.co/wikepijosipi/Sjf8RJm/21160758706.pdfIn PDF document text
    • http://tadefog.medianewsonline.com/hepatic_encephalopathy_grading.pdfIn PDF document text
    • http://xuxikurov.mygamesonline.org/arthritis_back_exercises.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/Rhhhfic/pixel_buds_2_black_friday_deals.pdfIn PDF document text
    • https://cdn.sqhk.co/gutifusuf/jcPic4B/lifefisaziwovajil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503035/normal_6029365e806cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412183/normal_603f3e9ba3fe5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425916/normal_6020fe597c0e0.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://uploads.strikinglycdn.com/files/23f3745c-6088-4209-80f0-fef01bd2eb2c/17608155313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a89c61b5-c996-47ad-b459-44ebcaf6336c/what_is_the_effective_compound_rate_of_interest.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/why_cant_i_sign_into_my_verizon_fios_account.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/tamil_to_english_keyboard_app.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/asme_b31._8_free_download_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/71066959135.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/capitaland_reit_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/jekafikagezurariximaleli.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/9716855812.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/bully_anniversary_edition_android_1.pdfIn PDF document text
    • http://xadilopavut.myartsonline.com/98744933625.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_off0000e50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50A 5544 bytes
SHA-256: c60770689bfd67b5d1efc94a6c2d551fa410aea7b02512838aab17958c2d7077
font_01_sfnt_off0000f7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BB 10644 bytes
SHA-256: 31974b1ee78153495f2c9d3a91d326831d3a98d6550671febe5035dda6603bc1
font_02_sfnt_off00011c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C26 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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