Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc069da7140d284…

MALICIOUS

PDF

76.2 KB Created: 2021-02-22 13:37:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6615f8b43fad13a019dbe7ed09baf1c3 SHA-1: 30dfaffcdc1df6b92b54507397b438240578c06d SHA-256: dcc069da7140d284d6d1c0ea0fd0d7d2bab8475d1519532c7713e13b09384e2d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, masquerading as a tax comparison tool. ClamAV and an ML classifier also flagged this file as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

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://leonvi.ru/wix?keyword=online+tax+comparison+2020-21 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387229/normal_6032f79e4752c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_600a856b01e78.pdfIn PDF document text
    • http://streamsweets.com/canon_printer_service_tool_v4720._exeow42d.pdfIn PDF document text
    • http://istlan.space/luzazuwepugovn03d9.pdfIn PDF document text
    • http://makeyourself.xyz/212325311142p9ce.pdfIn PDF document text
    • http://yoganchik.space/89681336795z0m5h.pdfIn PDF document text
    • http://cardio-natural.info/fufamivupuzezul752l.pdfIn PDF document text
    • http://podjem2.club/75171431411d10cm.pdfIn PDF document text
    • http://zerkalo-fugicar.website/billboard_music_awards_2018_live_performancesix5wg.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/muvojugejoxip/images_of_good_morning_wishes.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/tuxititibitanipitog.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/cognos_report_studio_repeater_table.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/12th_zoology_book_english_medium.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/maradona_malayalam_movie_english_subtitles.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/luggage_bag_tag_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/putetov.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_off0000ecfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFE 5532 bytes
SHA-256: bbe9031692b29cb7ebd4fc906c97074ec2f6b2395754d8fd5d32116a18cf5dd9
font_01_sfnt_off0000ffc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC4 10664 bytes
SHA-256: 9b86604f57b22baa1578af9bd52f530986f0d0b28a283cf71b0f21202585e3d0

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