Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2cd9bede2803e9f…

MALICIOUS

PDF

47.4 KB Created: 2020-10-09 07:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5cc24212f340d6c6f6efee5ead28fc63 SHA-1: ba4eb3094068a8d3dd42dac700595703fd9758c6 SHA-256: e2cd9bede2803e9f3d2914b667c7223720b8a72e2a034fc79794f841fa200340
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.ru/pify?keyword=skyrim+se+rdo+load+order In PDF document text
    • http://tumamire.ripancokennels.com/uploads/1/3/1/4/131453325/dured.pdfIn PDF document text
    • http://jodup.newsomecasting.co.uk/uploads/1/3/1/4/131438437/jerufevajufikonajufo.pdfIn PDF document text
    • http://files.conteanalytics.com/uploads/1/3/1/3/131382395/7d07e14bc6dcf9.pdfIn PDF document text
    • http://files.goldcountry-realestate.com/uploads/1/3/0/7/130776016/8923742.pdfIn PDF document text
    • http://fisofub.3bdog.com/uploads/1/3/0/7/130738909/9379596.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2294/2871/files/rwby_map_of_beacon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3493/4429/files/sharp_sound_bar_ht-sb603_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7000/3621/files/4027848819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/young_goodman_brown_symbolism_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/nudaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/40463375537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2333/4565/files/revoguwuvigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6040/4646/files/colonial_life_in_new_york_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6eadc9ae-a3ee-4481-82ea-c6e81929fe4e/bojenurewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a697f07-7534-43dd-a904-81089d443622/93653608491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b013dda-5937-41f8-8f6f-b7974036fba1/95373156199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82fe448d-5875-4cbb-b6e3-4e314f16bc65/zupasibogamijevud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b5d3924-36f8-4b92-950d-6f807eab434c/83456248315.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000658e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658E 5240 bytes
SHA-256: 723201ea9f9e0d08e112d12ad36269f83832ecc57bee4477103ca35b47420ebd
font_01_sfnt_off00007750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7750 10156 bytes
SHA-256: 6533ccb88440ff6ea07440c09b76d9b99a4691cd46fda1c834e631b779d66a3d
font_02_sfnt_off00009a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3A 16608 bytes
SHA-256: f163c3a6bd68c9535809c6f6dd1c592d5fccf77a388832a36020aad6813d2ae1

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