Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fdcac0950f460e…

MALICIOUS

PDF

73.7 KB Created: 2021-01-30 13:47:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 3fc5b331d3eb405594ca1250ad76fbcf SHA-1: 73a785502a6019a0dd32527bfdad3b143ec35d09 SHA-256: d2fdcac0950f460e4f87aeb2ab4e65ccafb56b1514d0359cd0895e4cdec39eb7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a lure for downloading potentially harmful content, disguised as a hip hop albums zip file. While no scripts were directly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a malicious site.

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://jottigo.ru/aws?utm_term=hip+hop+albums+2019+zip PDF link annotation
    • http://1ux.site/crying_eyes_meme_templatetanpf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487623/normal_5fe275f569914.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413120/normal_5ff1c3827aaf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495849/normal_5fd78a937e884.pdfIn PDF document text
    • http://reduslimitaly-official.website/craft_legendary_weapons_fallout_76mvths.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/zobuwubedak/application_format_for_applying_job_by_email.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/57847476555.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/baabul_film_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/nudugovawam.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/24495244942.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/gazexisoxuwasas.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/26802296765.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/biology_of_belief_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/finding_equivalent_fractions_ks2_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/21982296816.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/64th_filmfare_awards_2019_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/happy_birthday_piano_music.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_off0000d744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD744 5176 bytes
SHA-256: 11247d2ad60f7c813f5d43c13eccee9cad678ee145681f914a4b8edefb6c92b6
font_01_sfnt_off0000e8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C6 10272 bytes
SHA-256: 38af3315d4cd74fd1f34df7ee0b4167c2430d53e071936b17dfef6e046718a80
font_02_sfnt_off00010be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE9 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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