Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a97507e0c3c795…

MALICIOUS

PDF

44.8 KB Created: 2020-11-08 19:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 05bda6d18c64faf35933c70d4ae4f454 SHA-1: d8c293ddd44286111f1cdceff58081851659c257 SHA-256: 69a97507e0c3c7957439bad0d5299f310202072497d638a007170693e62fde9e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafftec.ru/aws?keyword=electrolux+double+oven+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454556/normal_5fa0caf7268c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417214/normal_5f9b3d93cd4fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_5f8c37838d379.pdfIn PDF document text
    • https://sepubipig.weebly.com/uploads/1/3/4/4/134445985/9062846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_5f916178252c4.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/wanasuvedigo/a_to_z_dictionary_words_with_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/562e9679-28ff-4a2e-a53c-0c893e35bae5/lapupopulukilawud.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/ab_initio_molecular_dynamics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ea935ca-c540-4c2f-9ef5-f8ed846e1f7d/fire_pro_wrestling_world_new_japan_roster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbddbcf7-053c-4d6f-a70a-08187f416538/90234542479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16eeeae3-368e-4e28-9364-fd7329df6e56/sipogipovosasipetakif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dffd0673-1ac0-4934-ad35-894664d8a3de/good_night_in_japanese.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/84715466007.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/32350014358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9062557c-388b-4d4f-898e-32f6f243bf91/67438736481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3b3cd6a-76e0-42a6-860f-725c72f42ed8/57150597469.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_off00006f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9F 5132 bytes
SHA-256: 3ff72275f37e5638cc69e2a74092cbdaa7c5a33a9532361c734ad008d7650596
font_01_sfnt_off00008105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8105 10752 bytes
SHA-256: c6963f57dd476bdbdc3792482105beb7731073b6866cb5596029ed54958e2ce5

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