Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd59affeee6b7df…

MALICIOUS

PDF

76.4 KB Created: 2021-02-25 18:03:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cfdcfbcf243b6102b2f17c0e9a5a7126 SHA-1: 9e5cbffea3433c15f4b12816a328576d4fa6d00d SHA-256: edd59affeee6b7df26f88bce894c78dabe02a4a511986441043b38a1d81b1e86
256 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://xutativapejan.weebly.com/uploads/1/3/4/5/134521393/e9653176c9.pdf.
  • 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://seumenha.ru/wix?keyword=effects+of+the+industrial+revolution+worksheet+answer+key PDF link annotation
    • https://xutativapejan.weebly.com/uploads/1/3/4/5/134521393/e9653176c9.pdfIn PDF document text
    • https://ronunafo.weebly.com/uploads/1/3/1/8/131856498/godurodiketepun.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/Iggjiia/38230153238.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/6170350.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/jqigege/minecraft_new_cave_update_mobs.pdfIn PDF document text
    • https://cdn.sqhk.co/fepixuzutol/ifjj2ic/joplin_high_school_number_of_students.pdfIn PDF document text
    • https://cdn.sqhk.co/purilusevike/Ujfjejj/new_emoji_stickers_3d_animated_wastickerapps_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/UJHAjer/95324546405.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/DMigjhi/88785828619.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/tibitexil/49243716463.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/snapchat_no_app_store.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/we_don_t_talk_anymore_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/joziwoboviperan.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/binder_android_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/mathematics_for_computer_science_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/stabilized_whipped_cream_using_gelatin_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/autodesk_sketchbook_macbook.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/alsa_architecture.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_off0000edac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAC 5384 bytes
SHA-256: 110da51c13813c047494e7c1911353c382a38c589cfc4104de4540c5c3c6441e
font_01_sfnt_off00010017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10017 10748 bytes
SHA-256: b5196c71ae03256a5c731fdad33557fab42a0f5e6910f6c528e6d46384f2e0b8

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