Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c1d4f45248d22d5…

MALICIOUS

PDF

79.5 KB Created: 2020-11-10 05:02:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ac2ec9a2128b281171a800b3c91ed991 SHA-1: 124bfb1a6f56354b1f8134f90681346e0155be2b SHA-256: 2c1d4f45248d22d56272d2f8d3b166c67a31437bd13f4005bc33886486ec8953
96 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 embeds external URLs that direct users to attacker-controlled resources. 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-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://traffine.ru/123?keyword=papa+louie+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f87d97b012b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8beb656808d.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/lixisariwulo/animal_cell_model_sheets_with_vacuoles.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/ejemplos_de_ensayos_persuasivos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c110864-445f-4e42-849f-caa5045b5ace/30837823876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3a97166-2ad6-4d77-a472-2729d9bc29c0/mutikixigix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/113dfe8d-9d0e-4992-8269-4342ddaffde0/toyota_forklift_7fgu70_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/out_of_many_brief_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/pearson_verbal_ability_and_reading_comprehension.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/pifolofa.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/comment_couper_un_en_plusieurs_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8328fb37-f2de-4b5e-b5b4-e1a96a2472ac/weripizogavunetisifogod.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/white_pages_md_montgomery_county.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_off0000eefb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFB 4288 bytes
SHA-256: cfa4a79cd9e75e39487f5d14a1fa22317c0dba20c03e358b8d4985e54017f02d
font_01_sfnt_off0000fd8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8F 11200 bytes
SHA-256: 7980ff2157148e620f1639eac00022f34b9130628a57799e164e60bd03e34104
font_02_sfnt_off00012303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12303 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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