Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ecde4b7c2a9ff48…

MALICIOUS

PDF

47.2 KB Created: 2020-09-29 16:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0e86da1bf78360b12c7f4e805fed4776 SHA-1: 9dc2e7c3f85eeae0802814fde75c284c2ea34643 SHA-256: 6ecde4b7c2a9ff4869d5674b7dc2c1aa9878c9df42403e46ecc8e580baa9f624
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://ggtraff.ru/pify?keyword=evenflo+titan+65tm+convertible+car+seat In PDF document text
    • http://files.angiedlee.com/uploads/1/3/1/4/131452958/1744593.pdfIn PDF document text
    • http://gofiloxot.crackingthehungerartist.com/uploads/1/3/1/6/131636947/4165799.pdfIn PDF document text
    • http://pamuni.donavitaeinteriors.com/uploads/1/3/0/7/130775354/2890244.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/1/0431/4103/8234/files/96426829471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/libapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8741/0840/files/high_definition_cinematography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/sebivilomiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/dragon_ball_z_action_figures_price_g.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7392/9377/files/e_marketing_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0116/5462/files/vijeb.pdfIn PDF document text
    • https://5ed5c820-ab9f-4563-b2fd-72de05ff916b.filesusr.com/ugd/2ca09c_844cde61cd4049fe9146d90e5e106f14.pdf?index=trueIn PDF document text
    • https://c41b117b-c517-4ef7-987d-32de2a170cb9.filesusr.com/ugd/cb0188_38e1cc284349464aa4c1bf1b8fa7a1e4.pdf?index=trueIn PDF document text
    • https://c9e2846d-3065-4fa5-a9a5-043504288738.filesusr.com/ugd/108936_52ec8414f5084e96bbf03046ff684f91.pdf?index=trueIn PDF document text
    • https://c7c6d662-129e-4717-a92c-15581ee013f3.filesusr.com/ugd/4a2613_938b36d6bcc44370a685c9b05220bd0c.pdf?index=trueIn 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_off00006c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3B 5248 bytes
SHA-256: 91ffcd985d651aaabba2930acbc64def72af71fc497b30d37e98c2a07c8f4503
font_01_sfnt_off00007dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFF 10396 bytes
SHA-256: 0e81712bd41dbd5012081513d50d24e431038c1bbfbdbf86c6bbaf965ee89f8a
font_02_sfnt_off0000a1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A2 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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