Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ace8f533b439722…

MALICIOUS

PDF

62.0 KB Created: 2021-02-13 16:31:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d600f8db73b222007f235e04a00602c8 SHA-1: 156929a521814d4cd7bdccbffa49a4f5474c1797 SHA-256: 6ace8f533b439722fd6af84567259ce67e98187eadf4ac0ee1a8d880e22705ed
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://bologen.ru/wix?keyword=yum+or+yuck+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443372/normal_6019c0f1ee2ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_60273110b83d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374536/normal_5fd8e51e08a4f.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/ha6JYIx/93340093610.pdfIn PDF document text
    • http://nepizomojafedez.22web.org/divavu.pdfIn PDF document text
    • https://cdn.sqhk.co/dosojegomugu/Jgg3q7N/apk_wedding_cake_maker_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_60126dc9234d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://batitesejikak.epizy.com/xusuzonanadozegex.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/going_away_party_invitation_template.pdfIn PDF document text
    • http://kodeketabekem.epizy.com/disbelief_papyrus_fight_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/37407290450.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/93494467625.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/employee_loan_agreement_and_promissory_note_template.pdfIn PDF document text
    • http://duvuxosejoxogu.rf.gd/97318650563.pdfIn PDF document text
    • http://zelovavatag.rf.gd/21644319726.pdfIn PDF document text
    • http://pivutabomenatam.rf.gd/72684753444.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_off0000b769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB769 5132 bytes
SHA-256: cda8aed7a316c27d760a41c5ed1232d73348092796496ee79481b6d1f1440a8c
font_01_sfnt_off0000c8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E2 10100 bytes
SHA-256: 206777e049abae4b490524776f908b4ccae08edcbfeb42f5d5ea053b004e194f