Malicious PDF — malware analysis report

Static analysis result for SHA-256 105b50ebcd3f2ad2…

MALICIOUS

PDF

69.9 KB Created: 2021-03-07 11:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4b95bd19d2cc4eae40b57a8be7496ccd SHA-1: bd2ead4215f858529269d9b8f95f3fc3aeee5ed3 SHA-256: 105b50ebcd3f2ad2954a9bd60dee56f98c2598ae1986c9770ed5ad0975e77bd9
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://lozipotod.ru/wix?keyword=physical+and+chemical+properties+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464319/normal_6026088e78812.pdfIn PDF document text
    • http://luminar3-download.xyz/zitedusogomosjwp4u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461746/normal_601a62e3cad53.pdfIn PDF document text
    • http://thelandofbadideas.com/53747794319jynb2.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/house_on_the_hill_lyrics_lil_skies.pdfIn PDF document text
    • http://carinsusa.com/ace_english_grammar_and_composition_class_5_solutions9xt7x.pdfIn PDF document text
    • http://vir-tus.com/archived_messages_facebook_messenger_androidpldph.pdfIn PDF document text
    • http://romeita.space/edit_text_in_on_ipadkpx3v.pdfIn PDF document text
    • http://mamajan.space/blessings_of_baapu_video_songwqf1n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502833/normal_5fe1eae02dd34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500692/normal_6012643658a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485828/normal_5fd64b29ca2ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403684/normal_5fd2fcb5bb873.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4db61c00-1078-4917-8a1c-a2c1480eb6e0.filesusr.com/ugd/c94206_b00bc9a8f16140dc8ba39472a49b1030.pdf?index=trueIn PDF document text
    • http://zusaxadixuxot.myartsonline.com/67343382013.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_b6cb57d489a74b3b8c637b2a93969b5d.pdf?index=trueIn PDF document text
    • http://lifobem.myartsonline.com/left_behind_series_titles.pdfIn PDF document text
    • https://f05e0dbb-21cf-40ea-8b71-00b8d6f49a3b.filesusr.com/ugd/b09e1d_ef33541807764d13b234e965feb9c82d.pdf?index=trueIn PDF document text
    • https://eed7fa7e-4f31-4ba6-8269-e73f07ac74c5.filesusr.com/ugd/93374d_4f3d991dab9f4ac5acadc41948bb4672.pdf?index=trueIn 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_off0000d496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD496 5572 bytes
SHA-256: 7c26bb5bd63abb13e189928dbef226197c0ff4a066c4330c5226cef1fc54683d
font_01_sfnt_off0000e774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE774 10228 bytes
SHA-256: be858ac38bb7dedc5ac04e43184e944f7ba22c274ec01b3a48665cac4ac7e80c

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