Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea58c50ea377743…

MALICIOUS

PDF

47.6 KB Created: 2020-11-05 18:04:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 14ee7368973ef055387721ed50fe07f9 SHA-1: 5a7b0eb8ba04d77c5fd0553816ba931d0b7d4bbf SHA-256: 1ea58c50ea3777438c3af5254373d1b98311b484738575494e2aa467020a5c15
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?keyword=rise+of+skywalker+torrent+file In PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/a73fa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/50365b00-9a28-41a5-bb34-831b3ae5825d/3783403788.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/tanya_barrientos_se_habla_espanol_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/casio_wk-200_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce212e24-e860-4cdd-af65-336c8b961a0b/laxuviremesosov.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/paleo_diet_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3090/4484/files/kyocera_cadence_lte_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ecd58f4-b89c-4a63-bd59-53a1026ddf66/roxit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/229fd653-cf68-411a-b658-c403d95402b1/ri_tv_guide_cox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/4476/2309/files/early_adulthood_ages_20-40.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cde16f2b-206e-47aa-b199-885dba67df37/vusemavirukiweranidegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a5ffe96-8df4-4172-baf4-a2e99204aa7f/wenaruzawumapafafuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40481f6d-19cd-43ce-a2a3-f75a793244e1/44214290722.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/words_ending_with_shed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bce828d0-c79e-4f8e-9eaa-bb412fbf7379/dapatugu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8E 3836 bytes
SHA-256: 06b6756a470fc74672f8151f35438ae47883b72a3b991385de160c82dd978bd3
font_01_sfnt_off00006c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0F 4816 bytes
SHA-256: 31dc32d0619458c76506c487244113cbd0ba336232de2a5abddcddda5716d45a
font_02_sfnt_off00007c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 10816 bytes
SHA-256: c0b9ca1657637571b6773d5b0cb80eb62f032fb7475725e964f926f1847ff542
font_03_sfnt_off0000a16b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA16B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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