Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70cc757751147f2…

MALICIOUS

PDF

71.0 KB Created: 2020-12-04 16:51:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3be05ebffa5406a39c816a6893b1b0a3 SHA-1: d86646ef135ef43ef504d5f215b8c1ccb225090e SHA-256: d70cc757751147f2af0f1ca86d4c43c3167840e8d5bfd6f518b0fe5d6bc5d8fb
96 Risk Score

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://traffnew.ru/123?utm_term=american+dream+essay PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf604e3570fb44d1fa6285/1606377551509/hanuman_chalisa_lyrics_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/poetry_chapbook_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66f6492c50b1a1e9d5f03/t/5fc9ffee52b5874c8595d90f/1607073778508/pixel_gun_3d_mod_apk_latest_version_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9e3bda9c57a97be47bf/t/5fc3d2f6f3de5e49b5d98419/1606669046442/19141209124.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c656affbf90a660350a0/t/5fc8c590b0f45b2a3d2d95ac/1606993298926/jafotewuxorijupilugesa.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/wash_white_sheets_hot_or_cold.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e552ec917750a3d7e003/t/5fc237454f98375720295ef8/1606563655392/98466715464.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d52e3dfdd95b60d4bb65/t/5fc2080218e72e5fdb1ebeba/1606551555003/81450424345.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/hidden_pictures_printables_hard.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc71060fa9ecc39789d5d35/t/5fc7804d2ac13f1ee9bd41ab/1606910029757/superhero_coloring_book_games_comics_drawing_book.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/zuxawovawomifopumij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4afd3c02f22b9d037883/1606372097419/teduxukuvepotusijojojav.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_off0000d83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83B 5144 bytes
SHA-256: d8f8abae7700015ed54adccd287c736936995c0ca9771483bf99de2a9fc89d72
font_01_sfnt_off0000e9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AB 11204 bytes
SHA-256: 664f843018ae32a8cb68e5828a8d9f6be2f09e6a8523d14e3a0fe24407ddf361

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