Malicious PDF — malware analysis report

Static analysis result for SHA-256 81e458aa6644aad4…

MALICIOUS

PDF

70.7 KB Created: 2021-03-01 04:33:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9834c92190ab03887cb44c1ef571ba68 SHA-1: b1e2803b6b8a57d94d0b55d9c8b87d43fceb2a76 SHA-256: 81e458aa6644aad45427b0f81e79c4404962d8eb19a3fa7d078da2167a33e66b
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://fokemale.ru/award?keyword=do+your+best+try+your+best+friend PDF link annotation
    • http://popapirim.22web.org/viluzulomuwebonanogone.pdfIn PDF document text
    • http://gefakusudob.22web.org/physical_address_format_south_africa.pdfIn PDF document text
    • https://nenubijul.weebly.com/uploads/1/3/5/3/135393623/9913522.pdfIn PDF document text
    • http://boviriso.22web.org/54603088774.pdfIn PDF document text
    • http://resimpub.com/free_comprehension_worksheets_ks3_uk1b88b.pdfIn PDF document text
    • http://gijaziveved.iblogger.org/zetuzudixuranegubawo.pdfIn PDF document text
    • http://lewabuvuk.22web.org/14846347818.pdfIn PDF document text
    • https://pilidikuvitas.weebly.com/uploads/1/3/4/7/134766888/fa122e1603bb9d5.pdfIn PDF document text
    • http://bijopesenof.iblogger.org/mefikebug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sinodigewenewe.rf.gd/97199761950.pdfIn PDF document text
    • http://segelomo.epizy.com/laxexitopiwitunarozu.pdfIn PDF document text
    • http://labukifured.epizy.com/48284648389.pdfIn PDF document text
    • http://mejesikiwabez.epizy.com/converter_decimal_para_binario_com_virgula.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/using_alarmmanager_and_broadcastreceiver_in_android.pdfIn PDF document text
    • http://wenadudik.rf.gd/the_jewish_phenomenon_book_review.pdfIn PDF document text
    • http://musarozopod.rf.gd/easy_percussion_ensemble.pdfIn PDF document text
    • http://dijinisefiregot.rf.gd/dowuzanamivif.pdfIn PDF document text
    • http://fupewazogapoda.rf.gd/3318365363.pdfIn PDF document text
    • http://detotoga.epizy.com/490335316.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_off0000daa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA0 4900 bytes
SHA-256: 686c2e398350cd5bf869496868787fdff420c59d35937b7c4d1d2a634428ac31
font_01_sfnt_off0000eb64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB64 9888 bytes
SHA-256: 2b276ec3a747091ed3a569da4bbc51da1c5cf9a7733b5109126ffb7916083789