Malicious PDF — malware analysis report

Static analysis result for SHA-256 6295d2f88c56bab5…

MALICIOUS

PDF

66.3 KB Created: 2020-12-02 10:30:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5692e0e2b73a58ea5593458ff9852cbe SHA-1: d6c1fab37157d581abbc12cd498429e79a97182b SHA-256: 6295d2f88c56bab5126908c0c1e6e50eb07da153ebbe1bc5c7111a41925b626b
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 0.9997

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://ggtraff.ru/123?utm_term=thinking+geographically+key+issue+1+what+is+human+geography+answers In PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/bulijo_navutividonana_bulufigozodogi.pdfIn PDF document text
    • https://sivusemekatew.weebly.com/uploads/1/3/4/4/134491367/vaberubesugaxev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451355/normal_5fc3440727e1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc06cfc27a199023ab2e458/t/5fc0e7a43c6ccf69f37ee3f4/1606477733027/senor_don_gato_neko_atsume.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/4357018727.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f5b088c99b6d37a76c18/t/5fc3f8a19b1ed03538581e3c/1606678689939/for_one_more_day_summary_sparknotes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe4bde4f98375720ad7891/1606306784927/tragedy_of_the_common_man_summary.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e552ec917750a3d7e003/t/5fc43ff5e6d49a06bb197612/1606696950355/energy_work_and_power_worksheet_answers_stephen_murray.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/two_truths_and_a_lie_worksheet_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2fb60c30a162e0c601609/t/5fc71529e2dcb1274de7287e/1606882603264/42518659872.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00570a3bf4b14aba44e61/t/5fc1673b18e72e5fdb0c4146/1606510395551/preschool_welcome_letter_examples.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_off0000b8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D2 5604 bytes
SHA-256: 2780d4b2ec14494607288f1c4daa3dd4338ebd6b1f4a7322c3972f7ff49a479a
font_01_sfnt_off0000cbd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD8 2744 bytes
SHA-256: cb03acd017500927988b7e50e495582682f6c23237ddc20251056c6592ca1707
font_02_sfnt_off0000d784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD784 10576 bytes
SHA-256: b56dd0198a5eeb9686d9ac0010cfce6ff74d9a45f93dec83159741f024f649a0

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