Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c69e1a19db658de…

MALICIOUS

PDF

67.8 KB Created: 2021-03-11 02:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2c0a3be7ab72f3aae0d8b3142dbe4aab SHA-1: bbf35bdc64309d225ebd557887f442fa8693d3bd SHA-256: 8c69e1a19db658defada2ec657362f4715a3d0c09c9b25aae1e6a5a4028c8585
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/award?keyword=2020+calendar+malayalam+pdf+free+download PDF link annotation
    • http://logowiwubapokar.iblogger.org/xuwevovewofa.pdfIn PDF document text
    • http://vulufinagi.mypressonline.com/basel_committee_charter.pdfIn PDF document text
    • https://tobuzedatenet.weebly.com/uploads/1/3/4/3/134322281/turazudu-zibalus-banoz-gakew.pdfIn PDF document text
    • http://bufosizodibe.iblogger.org/febabadig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5fe40c6d83375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477864/normal_600a134a2f3ca.pdfIn PDF document text
    • https://remitibomuko.weebly.com/uploads/1/3/4/8/134853657/bakixuwipuwaz-lazowagixop-tasuduna.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369922/normal_5ff973e424c25.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/95189080343.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/kudanutawaliwon_xunisuziwe_dijilefawuwa_kozuxosemot.pdfIn PDF document text
    • http://rijewomel.scienceontheweb.net/twilight_2008_full_movie_in_hindi_part_1_download_720p.pdfIn PDF document text
    • https://goguribepolim.weebly.com/uploads/1/3/0/7/130739596/ruguvulemafolumus.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/dakebesuvum/bobbi_brown_makeup_tutorial_eyeshadow.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/tolozedibepusuligofij.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/actively_learn_romeo_and_juliet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/wiramupipenugo.pdfIn PDF document text
    • http://telifujovemevo.atwebpages.com/lukakofizu.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/55614356746.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/avery_template_5260_for_pages.pdfIn PDF document text
    • http://kaxemazetoralib.rf.gd/wabuzafajagedobi.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/kobakelozepolixaras.pdfIn PDF document text
    • http://jaxegug.rf.gd/city_of_omaha_efinance.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_off0000cd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD80 5496 bytes
SHA-256: a49b721086e08272efbf70af2c153a32755cac9920828063f5e0bebc9be8f9a8
font_01_sfnt_off0000e031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE031 9724 bytes
SHA-256: 3e9016ffe148c6b0fa5c6771d0665252aba9671f8e383623ba987e058d59f81a

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