Malicious PDF — malware analysis report

Static analysis result for SHA-256 053bb3029e8c9ea0…

MALICIOUS

PDF

52.0 KB Created: 2020-11-02 04:25:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aeeeca16b1cadeee6d496e2012dc6ca6 SHA-1: 962a75ce2568f1338203a66527644475708a9841 SHA-256: 053bb3029e8c9ea0f1409f60c8f866a8e4ed34ef0ecbbe6a220cfbe00a6447d6
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://gettraff.ru/123?keyword=domain+3+danielson+examples In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5f9578522e29b.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/1/0435/2291/6520/files/spelling_worksheets_for_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3710/0694/files/9203247146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12ad091b-86c1-48a0-9792-7f768350bd1d/26064035207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/140d2fa6-46c2-4349-99aa-62b0ddb72308/limavijiwurelavixegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6337/5535/files/pidipesutamapew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8069/5462/files/36840524563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5263/6573/files/android_developer_certification_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9545/6413/files/xafelavasovuzigemoleri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ff1061-f71d-4b28-bd80-dec2ff84d053/xowefimewixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55850a5-4d99-4d3b-84ef-a95c5ffc90cc/xoxatamajofugisajireki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b0d81f1-f2d8-46e6-b852-1cad8029f505/mofonadenazolelalesomedo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10ff1e91-edfe-41db-ab5d-e29357c3df08/51423399294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7aca094-c6fc-418c-92bc-aff66d3dc2bd/uber_social_media_fail.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ecabbf0-443d-4a86-aa40-1617ced06d5b/mitepovugina.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DE 4948 bytes
SHA-256: 81b37298320b9412910144aa190ed976fcb2b9b22ce24491344c7813e3b81cec
font_01_sfnt_off0000798f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798F 10760 bytes
SHA-256: 95d2230dd46fd7dc1272dad758f40ed2b04c87110fdf48b5ae38de7ed96d0a1e
font_02_sfnt_off00009dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCC 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_03_sfnt_off0000b2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2FA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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