Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6458e3f15b4bb95…

MALICIOUS

PDF

76.7 KB Created: 2021-03-02 12:38:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8753cfdc6c5427ac10e0b9cd172b1fcf SHA-1: 18cb3769995e2082dc8a9668e7f27170736ae275 SHA-256: d6458e3f15b4bb9542b0e3277b38cc136fa0d5b9f020351264ec3efbebceb83b
224 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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://yafferge.ru/aws?utm_term=letra+da+musica+nao+vai+saber+o+que+fazer In PDF document text
    • http://pop-marketplace.ru/rifodenoyhmg6.pdfIn PDF document text
    • http://artistichomesolutions.com/68579980636yxleu.pdfIn PDF document text
    • http://pivolirarorip.mypressonline.com/como_agua_para_chocolate_laura_esquivel_english_translation.pdfIn PDF document text
    • http://xiwesesakuvel.medianewsonline.com/26263887430.pdfIn PDF document text
    • http://bestcreditcheck.info/tuwixuqteap.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/wplheLH/creepy_vegas_free_slot_casino_games.pdfIn PDF document text
    • http://larts.digital/233715787445dujs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417656/normal_5fd68d8b64e2b.pdfIn PDF document text
    • https://cdn.sqhk.co/puwipaneke/c5uarih/feketijilozufisovo.pdfIn PDF document text
    • https://tidosivapozagul.weebly.com/uploads/1/3/4/3/134390518/3b6ac1a6e8.pdfIn PDF document text
    • http://xamawigokoke.mygamesonline.org/how_many_calories_does_a_piece_of_corn_on_the_cob_have.pdfIn PDF document text
    • https://kajuzenutojaso.weebly.com/uploads/1/3/4/6/134631714/1154891.pdfIn PDF document text
    • http://fidofawi.medianewsonline.com/37913317253.pdfIn PDF document text
    • https://cdn.sqhk.co/lapitobexeva/hcojbjh/juwaneromike.pdfIn PDF document text
    • http://particulieres-societegenerale.best/janakenetugujobesemutezr65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FD 5452 bytes
SHA-256: 2cfe632f2f6f0ee4091399654e6480a8c58a429480a6c9ed607305cf87fb3dee
font_01_sfnt_off0000fc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC80 12688 bytes
SHA-256: 2cf5cd8e26dce13bb077b6801046219a6862a02adcd2e82c7db4f0b7b0e88d8a