Malicious PDF — malware analysis report

Static analysis result for SHA-256 442d9e23648522f6…

MALICIOUS

PDF

70.3 KB Created: 2021-02-28 16:03:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5ef24c71b257cbba7dddd1eac02e0e0e SHA-1: ba5c6c1a1e4858b3eeb67eae718fde409d6285b4 SHA-256: 442d9e23648522f6c93a12014ca2f722af54bcd0e8ce1169d8c7921c2f479a2b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/wix?keyword=unit+7+worksheet+1+mole+relationships+answer+key PDF link annotation
    • https://cdn.sqhk.co/tiwumixe/iE4X6ge/wisizabibagef.pdfIn PDF document text
    • https://ponigeje.weebly.com/uploads/1/3/0/8/130874529/0177f66779d9a.pdfIn PDF document text
    • https://bixugukov.weebly.com/uploads/1/3/2/6/132680808/8346883.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/5XLghhi/reziwotuxotepex.pdfIn PDF document text
    • https://pupebofedajawe.weebly.com/uploads/1/3/1/3/131383363/3710001.pdfIn PDF document text
    • https://dubuweni.weebly.com/uploads/1/3/1/6/131637072/61fca3c.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/XSKhcha/83558999751.pdfIn PDF document text
    • https://lovizedisar.weebly.com/uploads/1/3/1/4/131437361/radukonawoma_domixekovo.pdfIn PDF document text
    • https://cdn.sqhk.co/metumolalub/ggi4gc6/advertising_and_marketing_manager_job_description.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bidexegope.epizy.com/diploma_automobile_engineering_text_book.pdfIn PDF document text
    • http://vugugevijoxudi.rf.gd/on_the_road_full_movie_download_in_hindi_480p.pdfIn PDF document text
    • http://medexode.atwebpages.com/briggs_and_stratton_lookup_by_serial_number.pdfIn PDF document text
    • http://rususekobijo.myartsonline.com/introduction_to_quantum_mechanics_2nd_edition_solutions.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_off0000d4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D8 5440 bytes
SHA-256: 21c41918a4ef432082a5eba1f2db3355bfa5a6328e3829aebd914078bfc1a3f6
font_01_sfnt_off0000e756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE756 10696 bytes
SHA-256: 71885c9364cf98270d7f8620d3733feede606ced3337221c464c16908ac3c6a8