Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c6491b30a088ff…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 08:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2ea2597ac3abb3e376db93e0d0c7fae8 SHA-1: 6f8245a3dedb56f719433fa0b74629eef494aa44 SHA-256: 23c6491b30a088ff5484d410b96e9839b53e5f50eb0532fb5a5a65f91108c339
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://nipisod.ru/aws?utm_term=manhattan+prep+gmat+books+review PDF link annotation
    • http://antileqphh.site/zarizemfg94c.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/17614029668.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/B33jikF/dino_jump_run_cactus.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/snake._io_hack_downloadwwqts.pdfIn PDF document text
    • http://nakomajuvedina.iblogger.org/the_little_prince_movie_best_quotes.pdfIn PDF document text
    • https://kopusitubo.weebly.com/uploads/1/3/4/6/134698796/e688e6661050436.pdfIn PDF document text
    • http://devlp.club/nalovarisamofopixow4j2u.pdfIn PDF document text
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/devavukunuv_pabonetixapunen_dulogowifovebe_dixofunajoriv.pdfIn PDF document text
    • https://jorobeperepi.weebly.com/uploads/1/3/1/8/131856290/3c47b964c.pdfIn PDF document text
    • http://munoleriba.iblogger.org/xoxemuzomogunofabapo.pdfIn PDF document text
    • http://wacc-cat.org/video_brightness_app_androidqagqk.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/Rhdc2gf/zombie_movie_hospital_scene.pdfIn PDF document text
    • http://circus.market/vuriwixiwaxibotabigelikazuns3k.pdfIn PDF document text
    • https://cdn.sqhk.co/jekunesoru/qcheHih/control_center_ios_14_app.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lugirike.epizy.com/mupitufusugesixew.pdfIn PDF document text
    • http://salajire.onlinewebshop.net/possessive_nouns_games_for_4th_grade.pdfIn PDF document text
    • http://rutuber.rf.gd/xiwulejubiwogarakakisigap.pdfIn PDF document text
    • http://lobakixadob.epizy.com/what_is_the_benefit_of_ppf_account_in_post_office.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_off0000e217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE217 5560 bytes
SHA-256: a2ca7e09105aa239eb2d69953c1ef5e4d2414cdb9618401251461762c7c4b764
font_01_sfnt_off0000f4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F2 9796 bytes
SHA-256: 25ff7a259e7dc5f566d54a59246087760f7ca472a82ade17f995fa657597904c