Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c26ba8dcd2648d…

MALICIOUS

PDF

70.1 KB Created: 2021-02-20 20:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 723058504847dcd96c65b9809be916b9 SHA-1: 90e87a2fce5d1fb38df24f2d823693cf6a109bf5 SHA-256: a9c26ba8dcd2648d7e15f0341f54ad55c696f8af428168ac74d4eb8524d4165a
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://baarspo.ru/wix?keyword=holt+mcdougal+larson+algebra+2+common+core+edition+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472788/normal_600155aa8cb69.pdfIn PDF document text
    • http://pomevufe.22web.org/38677205283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_602610c514157.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418199/normal_600d0e48b14e3.pdfIn PDF document text
    • http://i-men.ru/374771798400fyu.pdfIn PDF document text
    • http://conicppjry.bid/exhibitor_prospectus9isaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415070/normal_5feda5071f7ee.pdfIn PDF document text
    • http://sewiximafa.22web.org/53934448642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_60243aa1757b1.pdfIn PDF document text
    • http://lexanizisujufum.66ghz.com/72460326075.pdfIn PDF document text
    • http://bakuvuwojesefa.iblogger.org/cells_alive_meiosis_phase_worksheet_answer_key.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375071/normal_5fe2841dcaf13.pdfIn PDF document text
    • http://electriccannoz.club/cowboy_corgi_breed_information98m8f.pdfIn PDF document text
    • http://fozakewugumomig.22web.org/57043561186.pdfIn PDF document text
    • http://takovod.66ghz.com/70303620826.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://tirevotijo.epizy.com/gulzaar_chhaniwala_dj_remix_song.pdfIn PDF document text
    • http://batijobiso.epizy.com/economics_online_course_answers.pdfIn PDF document text
    • http://wozurusezop.rf.gd/que_es_preeclampsia_en_el_embarazo.pdfIn PDF document text
    • http://relogevavikidid.epizy.com/aqualung_flute_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bde9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE9 5708 bytes
SHA-256: 604955c924d6a16c7651f0dd787e30ebf2563fe2926459b6e21b15a0e790f76a
font_01_sfnt_off0000d134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD134 13780 bytes
SHA-256: cd162cb7929dcf9f6416d33741076f3c0b7e85190948e15dc8668d021899d672
font_02_sfnt_off0000fcd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD3 2784 bytes
SHA-256: efdc7dbd22a273fb2a14068a97e5e68c46121c37e616b274846332f96b006413