Malicious PDF — malware analysis report

Static analysis result for SHA-256 a345705799f87b8d…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 14:22:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5148be89ec557bb647bd11f5af57084a SHA-1: f78888ca925d5b2a99fd07dc26e29785d879c292 SHA-256: a345705799f87b8dec782d6949be424acbfd5cb36b6f7b48eb7e533c9717e648
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/aws?utm_term=3rd+grade+reading+comprehension+computer+games PDF link annotation
    • https://cdn.sqhk.co/doginifa/Iwcjbjg/widipadumivazodatepeb.pdfIn PDF document text
    • http://bajelow.iblogger.org/duke_basketball_acc_report.pdfIn PDF document text
    • http://seomagnat1.online/66988136929nyl8j.pdfIn PDF document text
    • http://potenciy.xyz/ncert_class_3_maths_book_download_in_hindi3t9y7.pdfIn PDF document text
    • https://fotizewuzawefuv.weebly.com/uploads/1/3/4/6/134668380/8947504.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/90923197057.pdfIn PDF document text
    • http://salonlabs.xyz/proform_hiit_trainer_pro_vs_bowflex_m7sg1hp.pdfIn PDF document text
    • http://mebelrostov.ru/why_did_absolutism_succeed_in_francetxh9w.pdfIn PDF document text
    • http://kawlites.online/what_is_a_certificate_of_creditable_coverage_letterd28hv.pdfIn PDF document text
    • http://recepty-dd.info/40146381498pqqp0.pdfIn PDF document text
    • https://cdn.sqhk.co/zisenusaf/flRijic/assassin_s_creed_identity_apk_for_android_kitkat.pdfIn PDF document text
    • https://zeradukiw.weebly.com/uploads/1/3/4/8/134883462/dd4a230479.pdfIn PDF document text
    • http://fbcopyright-center.com/484013248897z7d9.pdfIn PDF document text
    • http://mebel-albero.ru/56312389761iekh6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fegixifew.epizy.com/where_are_ariens_ax_engines_made.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_off0000e089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE089 5524 bytes
SHA-256: f766a796236116105e2d9da179e4af72ffb8c4e1b05b329ad37d5eabc47e58e9
font_01_sfnt_off0000f320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF320 10460 bytes
SHA-256: b3f61264c21c2d900cd8044c51c0d9e437a1357b8d5ce0438f0f87b9d8524e3a