Malicious PDF — malware analysis report

Static analysis result for SHA-256 70173cc0917d5382…

MALICIOUS

PDF

65.6 KB Created: 2021-02-13 21:31:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dbd7e4ffb225e19e58594369a2811c1c SHA-1: 44aae7b713e559a12edf315ae30f3b299950c4a9 SHA-256: 70173cc0917d53829cf2cdcbde1a6eb2bdd4ad577a7bce084047ea21c1e26732
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://jacksth.ru/wix?keyword=essentials+of+sociology+brinkerhoff+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463006/normal_602428847eac5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365583/normal_5ff7ce07348b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469135/normal_60058257c8d4d.pdfIn PDF document text
    • http://safagiko.iblogger.org/incident_report_sample_workplace.pdfIn PDF document text
    • http://study-english-04.space/90940934009vtixn.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/63600794141.pdfIn PDF document text
    • http://f1l3download.site/britain_s_got_talent_2019_winners_performancehjeqg.pdfIn PDF document text
    • http://pejofewetoz.22web.org/84541969238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454543/normal_5fd10e7dd86b5.pdfIn PDF document text
    • https://mututekabifu.weebly.com/uploads/1/3/4/4/134466573/193913.pdfIn PDF document text
    • https://wavasifowimuzog.weebly.com/uploads/1/3/5/3/135321241/winukegajuvavufifip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/decimal_addition_and_subtraction_worksheets.pdfIn PDF document text
    • http://kiwusegofavuto.rf.gd/72207803726.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/43107835198.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/bncc_educao_infantil_2019_em.pdfIn PDF document text
    • http://xuxerikafirin.epizy.com/speaking_recent_actual_test.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/36339395222.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/wwe_bodybuilder_photo.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_off0000c393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC393 5680 bytes
SHA-256: ca9b145bbaf656d4dd2263c284cd84a7576164d147fa509867320ba7dfdf7477
font_01_sfnt_off0000d6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E6 10336 bytes
SHA-256: 92c29384fb1867a190bb9126c0096bf80f3722802e7d4db571810b7a16c5b0aa