Malicious PDF — malware analysis report

Static analysis result for SHA-256 480fc9d4386b850d…

MALICIOUS

PDF

44.1 KB Created: 2020-10-28 05:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c4816937284f3c7c78f35e9dcc4911af SHA-1: d788c32ced55a45c789bd5736b39f26f6c58ce17 SHA-256: 480fc9d4386b850dcf2ccc9bd40b8c8319920e6716ed57f393d0606b5b056b6f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ggtraff.ru/wb?keyword=imamia%20jantri%202018%20pdf%20read%20online`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign but likely used to mask the malicious redirector. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://ggtraff.ru/wb?keyword=imamia%20jantri%202018%20pdf%20read%20online In PDF document text
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/nilerow.pdfIn PDF document text
    • https://xaruxetadelu.weebly.com/uploads/1/3/4/4/134478950/566d53236e96d4.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/2597280.pdfIn PDF document text
    • https://kulinamolusamu.weebly.com/uploads/1/3/4/2/134234583/sikowugoxeli-vogova-pesisejonu-gedenimemuseg.pdfIn PDF document text
    • https://pamaridefudeluz.weebly.com/uploads/1/3/0/7/130776324/8e303116097d.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/mupukesunobaga/issues_in_financial_accounting_16th_edition_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/dezaverorevo.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/4921379562.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/17478020920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7133ba0-5ded-42f7-80f0-523f7ff31faf/27941921921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2207e69c-82af-4956-8a9e-879b066a086b/pozaxizoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70f0624f-687c-47e3-ac74-95e5161ba6aa/pazuxetudirilejurirobewed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0be6bd28-2138-4bf4-ae3c-2e58723201d5/javigogobelegipakarotux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8378/2062/files/frigorifico_teka_nfe1_320_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/curso_de_violo_para_iniciantes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7010/9890/files/plugin_chrome_android_download_youtube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0601/6674/files/cuales_son_los_4_puntos_cardinales_de_venezuela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9712/8088/files/unblocked_games_6969_give_up_robot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9af4ac8a-8b69-43d7-a996-dbac37fb1648/la_bella_y_la_bestia_cancin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e481ed1-4f8f-4e47-9448-c7f7d14a1c4a/16977753360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6570f6a-38d1-4ccc-a901-94456c247766/zack_knight_bollywood_medley_6_lyric.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/talolawu.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/15659950475.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/setoluwuzewup.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/livro_clara_dos_anjos_lima_barreto.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_off00006b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B62 5544 bytes
SHA-256: 5f75913ea8bad6ee39cb00352a1028ffc0d4665b3e1b43a9daafa030f442017a
font_01_sfnt_off00007e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E20 10964 bytes
SHA-256: c71931c9d252dbaf4c75fe07aa31aa78c68a452c5f2ab93222ba13e43857a87c