Malicious PDF — malware analysis report

Static analysis result for SHA-256 3368755a74c07438…

MALICIOUS

PDF

60.1 KB Created: 2021-02-15 05:14:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 60ec74a4dcce814e69194856359e62f5 SHA-1: 748006e611a5a458cdcaa34d9dffc504dd3bc8f0 SHA-256: 3368755a74c074387dcb22ea5916beb65fa0b461a6fdf6d4525af436bc522ac5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=trigonometry+pile+up+answers+with+work PDF link annotation
    • http://zoo-taxi.site/android_16_speech_to_gohand2ifr.pdfIn PDF document text
    • https://samazixudoreput.weebly.com/uploads/1/3/2/6/132681586/438930.pdfIn PDF document text
    • http://ufenmac.com/kojeruwunexunutexixak9ti.pdfIn PDF document text
    • http://votixowet.22web.org/top_android_mod_apps.pdfIn PDF document text
    • https://wugepugozufov.weebly.com/uploads/1/3/4/7/134744675/dodeb.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/bojojabifimoxotefojmbnoy.pdfIn PDF document text
    • http://gayerkan.com/dipotiwajanijomixatezaxivne8b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxonotagake.rf.gd/nikatiwenemudatazajami.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/xibizetufu.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/question_answer_of_chapter_packing_class_9th.pdfIn PDF document text
    • http://talakukatutevib.epizy.com/macdermid_enthone_safety_data_sheet.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_off0000b075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB075 5440 bytes
SHA-256: 817f1960f0ca2e6e933bb849713b100405976e54a76ca865ad5bea6fcfff93aa
font_01_sfnt_off0000c2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E0 9656 bytes
SHA-256: e69b08c76cc179cada99de8e8f35cbad387aed09ce88b2d19429371be7d69f28