Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a476e2780972f6…

MALICIOUS

PDF

70.7 KB Created: 2021-02-18 18:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 228f1d26fbe104cf267ed11e67e90706 SHA-1: 2f54aa3ea787565a5d6df7eeb83b5e7582a6f68a SHA-256: e4a476e2780972f6d41acbdf078cde74a27d2b1f5a8cc29c99422cbd9931ce3b
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=detect+life+pathfinder PDF link annotation
    • https://xoxatujetila.weebly.com/uploads/1/3/0/7/130775098/tigaluniwusu.pdfIn PDF document text
    • https://cdn.sqhk.co/tetaxekumipi/fTggIgd/72258962150.pdfIn PDF document text
    • https://cdn.sqhk.co/sivadapexiri/hNWLRji/wolfquest_2._7_3_download.pdfIn PDF document text
    • http://noverst.xyz/vans_logo_meaning_square_root_answerjq8s1.pdfIn PDF document text
    • http://asta-stroy.ru/office_ergonomics_safety_guidetxa2r.pdfIn PDF document text
    • http://cabinetsop.xyz/how_long_to_train_for_a_half_marathon_beginner8sck9.pdfIn PDF document text
    • http://useraisins.pro/ebensburg_state_police_reportsi7c2t.pdfIn PDF document text
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/857651.pdfIn PDF document text
    • http://pop-marketplace.ru/new_vegas_enb2sk7i.pdfIn PDF document text
    • https://jizetexosobuwek.weebly.com/uploads/1/3/0/7/130740437/5ae49ae5.pdfIn PDF document text
    • http://eagleaff.com/19059408521be9ti.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/iibijCE/video_downloader_app_for_iphone_2020.pdfIn PDF document text
    • https://dajukufatob.weebly.com/uploads/1/3/4/3/134345308/a06298b3.pdfIn PDF document text
    • http://myirn.icu/graded_piano_sight_reading_exercisesc0v98.pdfIn PDF document text
    • https://wojopegoguw.weebly.com/uploads/1/3/4/6/134690206/jakaxido.pdfIn PDF document text
    • http://gijutudubesakuz.iblogger.org/lagu_berikan_kesempatan_wearesfive.pdfIn PDF document text
    • https://kubududowu.weebly.com/uploads/1/3/5/3/135349078/1683501.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/7395693.pdfIn PDF document text
    • https://papuwupiruji.weebly.com/uploads/1/3/4/3/134348025/silulobebavulol_kuzerilariwutun_gugegar_zogonafawafegi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://porininiji.epizy.com/concrete_genie_trophy_guide_and_roadmap.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_off0000d9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A0 5064 bytes
SHA-256: c68cd8f21ea4376f8f2f20140b9a1fa5b9644ccf5e830b99f9725a91f8c2491b
font_01_sfnt_off0000eadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADC 10308 bytes
SHA-256: 57bc6ee91ef001ff3e25109bcfb1d2fb6f9914a9e27c66e47f395b795bc53257

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