Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2ce7728914941a…

MALICIOUS

PDF

67.1 KB Created: 2020-11-16 21:05:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: afba42b6b9203cf83bc08a97875a89e4 SHA-1: d60f461567e79acf4099ae558fa34cd333d00582 SHA-256: 7d2ce7728914941a806ada28929a21bb40a58c49e6b6c4f49d82ba58d821db2d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=internet+download+manager+fake+serial+number+fix In PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/mojuni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5f8d0d2440a97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_5f8eef2d55422.pdfIn PDF document text
    • https://bujezabuzi.weebly.com/uploads/1/3/4/3/134310034/6a09f57eef9.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/rozebofukixus/ebook_reader_tablet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05d54de5-3795-4837-9b7d-cee4892e845e/orbital_box_diagram_for_tin.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/rodefap.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/asuran_mp4_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/sample_excel_if_then_statement.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/pivug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f5aaaff-2689-4916-a181-6b096e7127e8/magoosh_ielts_vocabulary_flashcards.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/56879169502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f038b34a-e730-433e-8d65-f8eb0d3afcec/nopekupej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b553a615-a038-4d58-94bd-00abc59ef360/june_2016_trig_regents_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcff37c9-b630-4c6f-8e5f-f449aca57443/sherlock_holmes_malayalam.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_off0000ca5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA5F 5528 bytes
SHA-256: c276257fb6da803f8a8c15462ecf44f897afd62bc14d0850aa64a9b9c2765830
font_01_sfnt_off0000dd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD33 10060 bytes
SHA-256: f72531a6a5d4ad547a6f78b5bebe43efe5f0761161f8ec7e3000cdbc4581dbea

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