Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd3e042f2a38958e…

MALICIOUS

PDF

43.2 KB Created: 2020-11-02 02:11:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 9fa333e1424bb1a6ba372068553cc094 SHA-1: 8028be72a9cff310c2b7c7b7d8e9d330958708f4 SHA-256: bd3e042f2a38958e585d10c36ff44ab2eb9b3d6bff3fdba33b4cbbfa113b705e
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/aws?keyword=olympus+bx40+service+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_5f9f37d8b16e0.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/82762.pdfIn PDF document text
    • https://durabaseduxoj.weebly.com/uploads/1/3/4/2/134235759/3992375.pdfIn PDF document text
    • https://pirivelel.weebly.com/uploads/1/3/4/5/134505874/mawuvaroruxomobeza.pdfIn PDF document text
    • https://dodafuwunolig.weebly.com/uploads/1/3/4/0/134016835/9422569.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/4b201c87d.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/1/0500/3250/9085/files/jeep_cherokee_latitude_2020_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1496/files/20164411438.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/hotel_brand_identity_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9481/7981/files/vimil.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/todo_sobre_el_albinismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6442/5146/files/lirasoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/9918/5312/files/dodimilanurapaxelabazur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8423/3886/files/kupuxotujobobemilowovix.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/1998_honda_shadow_750_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/20899503917.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_off0000684e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684E 5704 bytes
SHA-256: 01f192d7dc858b481ef50a6250913fd71d9f3629380c4f9217a63fa688936f59
font_01_sfnt_off00007bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB5 10516 bytes
SHA-256: 170d66fc979a52ef1b0931f3395729e71bcbeeb02daba02424a616f147f75f66

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