Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3ddf4566cf2a456…

MALICIOUS

PDF

72.6 KB Created: 2021-02-27 10:05:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 772af61ea6c9992475b5f40ae1fd3c1b SHA-1: 58583f0de5d8640a274bb01e111737f2531c321f SHA-256: a3ddf4566cf2a456998284f3bc1e42f97683c578d9c5556ee46c105851cfda8a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/award?keyword=simbolos+de+los+diagramas+de+flujo+pdf PDF link annotation
    • http://lofajemami.sportsontheweb.net/jesubakisewuzedur.pdfIn PDF document text
    • http://daravto18.ru/2114297388135wwb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378604/normal_5ff64e262432e.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/can_dyson_vacuum_cleaners_be_repaired.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466408/normal_6029508a86c65.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/26308417435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459467/normal_60265273c94c4.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/organic_chemistry_class_11_solutions.pdfIn PDF document text
    • http://plsale.pro/what_is_an_abc_poem_examplea08pn.pdfIn PDF document text
    • http://levantemosaic.com/tc_helicon_mic_mechanic_2_manuale_italiano5m5oc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464539/normal_5fec932943642.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391915/normal_5ffa4e6a54e4e.pdfIn PDF document text
    • http://okstore.info/samsung_rf28hmedbsr_aa_not_coolingkfxv4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bugenerefajujus.atwebpages.com/genukopefexejasibop.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/craftsman_torque_wrench_owners_manual.pdfIn PDF document text
    • http://bifovigavij.myartsonline.com/honeywell_smart_thermostat_not_working.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_off0000da3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3D 5680 bytes
SHA-256: 4434536321c7bb14cab72f4f46cf52ee7644832062cafac4189bd7b9a0513c15
font_01_sfnt_off0000ed78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED78 11772 bytes
SHA-256: 6d09ce0f0e9f7d1a2e2b60fe52a14f98ec1cab40531b10197148399f686f7108