Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a8ecc6e7e22286d…

MALICIOUS

PDF

69.2 KB Created: 2021-03-05 00:45:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ee277decfe7a3da1f09522df854b69b7 SHA-1: 042d0a08fd67892acbba0f506a0e15e2a29c81e1 SHA-256: 2a8ecc6e7e22286db2b5a9536b76eca30ee0d1b5215e1a4d94a7db5208c113c8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • 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://zajinet.ru/wix?keyword=rule+of+four+ap+gov+quizlet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497658/normal_603086745aace.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/schindler_how_to_live_365_days_a_year.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476010/normal_5fd795e4cb1bd.pdfIn PDF document text
    • http://findfreegirl.com/50378600911jxs59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452593/normal_5ff29829c1b8f.pdfIn PDF document text
    • http://world-wild-shop.com/piano_lessons_cost_near_meohw7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368495/normal_600453469a771.pdfIn PDF document text
    • http://daludaja.getenjoyment.net/19563000443.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374203/normal_60084426a4cbf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9b6fd1e-d5b7-4480-b125-a9da6516ceab/razer_blackwidow_ultimate_2016_mechanical_gaming_keyboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc4a1c66-967b-4e13-bb66-9670ef771072/19593255282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de61adea-1c79-453a-b006-6f885ed0f05c/60105501703.pdfIn PDF document text
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_324c79d5cd6442bb8d4b62e0e68661c7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee6080a1-ad8f-4a37-b289-600aa1d9a295/753831125.pdfIn PDF document text
    • https://ca39a19f-16f9-469f-ab0b-65ec0463b8d0.filesusr.com/ugd/cc9b97_3ebbc60864674c6ab9448d32ee83676d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/jingle_bells_on_clarinet_sheet_music.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_3ecccec3bdf74f5989daad7090da9c27.pdf?index=trueIn PDF document text
    • http://sukokovevaz.atwebpages.com/how_many_calories_in_a_krispy_kreme_chocolate_donut.pdfIn PDF document text
    • https://1639490a-f715-481e-9fb1-af38d332269b.filesusr.com/ugd/a59130_5480c4c63cdc4b2fb5f38b51609f6322.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/sizujixajerew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7b012ae-687c-42b0-8585-e6014e617e58/93585433277.pdfIn PDF document text
    • https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_75130a38c2bf42aea548359a84bb5e9f.pdf?index=trueIn PDF document text
    • http://nukivamo.myartsonline.com/the_giver_chapter_10_discussion_questions.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_off0000d421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD421 5132 bytes
SHA-256: 1eb9680e5c83e26aec34b3c1cc4126a5459365f6ca13d33558171aed9b21981c
font_01_sfnt_off0000e5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BE 9948 bytes
SHA-256: 9506e68f9ab2faf76e347bca1958a23e10a9328dedc505cf0905fa7e89403b82

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