Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0f6def2a5ac6b8f…

MALICIOUS

PDF

45.1 KB Created: 2020-10-08 10:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a96cd9978d950963eb4908550af85c15 SHA-1: a4061a25ff00496162f9ca09a7328f57ca240c2d SHA-256: a0f6def2a5ac6b8ff4c4873f82feea4bdc0a6a23cd73cf334734c2057c5c7e31
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/strik?keyword=the+anti+estrogenic+diet+pdf+ori+hofmekler In PDF document text
    • http://xemaj.brdge.org/uploads/1/3/0/7/130776177/juzojenebidovizoxev.pdfIn PDF document text
    • http://files.orchidbehavioralcare.com/uploads/1/3/1/6/131607010/kixufagobito.pdfIn PDF document text
    • http://files.riseandslimeco.com/uploads/1/3/1/4/131438616/wezunesasezodag.pdfIn PDF document text
    • http://files.reunitingyoga.com/uploads/1/3/1/3/131379360/lafobadibu.pdfIn PDF document text
    • http://files.gowersartclass.com/uploads/1/3/1/6/131606208/301ef25.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/1/0488/2654/8389/files/rarusuwetibupudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1107/8814/files/animal_farm_spanish_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0380/1510/files/gravitation_interactive_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6442/9217/files/gujawupojerofitalasazuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9682/8832/files/roku_tv_antenna_target.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfa735f3-e133-4ada-9afe-7acfd751324e/2664631550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c1794cf-043c-4f10-81fd-bac06a79b4f8/juselasoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d62f096-fbf9-4107-b941-4d4cd0479dfb/22418319903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e524cc-7410-467d-a247-5032c49857ee/16153603864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c119fa9-b903-41b0-8bb5-5a45dc09695a/vapunebosomepuzedofaj.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000707c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707C 5584 bytes
SHA-256: dc9212910c3a342f156d6e13daab63d63c89ae4c2f323b38ff03fbd15a97edcd
font_01_sfnt_off0000834f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 10508 bytes
SHA-256: 637007a5c9cc5dd6361401aa1ff694bda93b09f6c3d5521de64cf67838c66ab2

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