Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83a1222410941d3…

MALICIOUS

PDF

43.3 KB Created: 2020-10-04 08:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b6b540924e0f172bd8a1602a3486929a SHA-1: eef390f82f9184d94bc27b1d4b22e1b20abff484 SHA-256: d83a1222410941d33923f1bdff3300d35a4ab175b0722234dbbeff86f0e07f7c
134 Risk Score

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.
  • 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://gettraff.ru/strik?keyword=old+yeller+study+guide+pdf In PDF document text
    • http://wesefaf.ruggedsouloutdoors.com/uploads/1/3/0/9/130969061/f441c640a9.pdfIn PDF document text
    • http://files.joyofmakeup.ca/uploads/1/3/1/0/131069887/jegosobumega_savogik_wojefukisanule.pdfIn PDF document text
    • http://files.mariamirojohnson.com/uploads/1/3/1/4/131483372/muwofasiguzalakiso.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://cdn.shopify.com/s/files/1/0483/9679/6055/files/87669823645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/1470/9160/files/how_to_wrap_a_shoulder_with_tape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3291/9455/files/round_tailed_ground_squirrel_babies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/ozark_trail_outdoor_equipment_air_mattress_replacement_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/fonazukikizevokepal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5397/2633/files/is_powdered_sugar_gluten_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5a13815-6126-430e-94a2-c8cdf496ae0a/latogukeruxozewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65022173-ade3-419e-b7c1-01d70fd6221c/xemexosagetiwibelijol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eec40c62-37d9-4c3d-822a-10f8eb7fccda/woduvuwolukapibog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eacfe1a-0eac-4891-b0f3-58c9db69d64a/ravasokunofafufasaw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6078 4792 bytes
SHA-256: f0fec1e9778d21d26d0c49f67116029f7b85c4b6ea5f128cc34eee074bbe795f
font_01_sfnt_off000070e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E5 9836 bytes
SHA-256: 948d3d26024cab19504314e55ed667571476834ae092efc37d65524174f76077
font_02_sfnt_off00009284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9284 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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