Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9824e87e9d6bbc…

MALICIOUS

PDF

72.6 KB Created: 2021-02-14 21:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 32c2feab62303da73b1a6e516c66063d SHA-1: b270bb4ed416f5e89280efe42833cd2479aa3632 SHA-256: bc9824e87e9d6bbc7472a57020df05f805c176b9a385c0b40d9d051f51fb3497
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=how+to+make+duct+tape+bags PDF link annotation
    • https://cdn.sqhk.co/melipetoluf/j5GHrih/9735319237.pdfIn PDF document text
    • http://mon-cmbretagne.best/drum_machine_sampler_plugine2r33.pdfIn PDF document text
    • https://jodajapiguzok.weebly.com/uploads/1/3/2/7/132710756/nususow.pdfIn PDF document text
    • https://cdn.sqhk.co/risejesob/jdzjctK/selajut.pdfIn PDF document text
    • https://nuzojumikosa.weebly.com/uploads/1/3/0/8/130814298/minexal.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/inhj3jc/jatixuvasesutuzanizul.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/hgrajhu/43305818150.pdfIn PDF document text
    • http://reduslimitalia.site/kanasunijaju5m0x1.pdfIn PDF document text
    • https://cdn.sqhk.co/jilelemo/hsBunie/mugotupidibagutegeraxum.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/cjjXiih/lawusedasix.pdfIn PDF document text
    • http://opticsystem.website/jiwapatofipukusifdjq66.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/ggZgcha/formula_car_racing_2019_mod_apk_download.pdfIn PDF document text
    • https://tagakokiginozol.weebly.com/uploads/1/3/0/7/130775172/govowawelapado.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/UKbh0Yw/pujamuridexupudagadu.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/winumigutam/64072893131.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/74458046005.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/residential_lease_addendum_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/kazegiruzulunesivedakinuv.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_off0000d623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD623 5524 bytes
SHA-256: 980e8f3249c45fe3902ec0354eefd979c745d254932fa2cdb727180ef9b6ece2
font_01_sfnt_off0000e8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DD 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000f16b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16B 10448 bytes
SHA-256: f3c577fc220a2b946ebadd769c48d91cd1488b7c37489106cc452bad987af349

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