Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd7fd747dcd5fd2…

MALICIOUS

PDF

44.4 KB Created: 2020-10-26 09:35:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 50b5dc2b812c006de47b44d11153e369 SHA-1: 3162b1040579d14b3b14cb24fd2b12277c703634 SHA-256: 0fd7fd747dcd5fd29f4c826042cda4f53d41bfb02c1a998a057b68f2a855e910
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://ttraff.club/pify?keyword=types+of+phobia+pdf In PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/gejasubadowomolof.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/3076381.pdfIn PDF document text
    • https://bigogewoxof.weebly.com/uploads/1/3/0/7/130739615/munonomisiwin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367643/normal_5f8ea66f521be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378393/normal_5f8c82ebde471.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/41e3680c-1b85-4f7d-8cc3-559064f690b2/liwonivegeseb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64eff701-03b1-49f0-b9ed-c172211018fc/rokutolifawib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2110db7-b2c8-4657-b454-8b1ec82d70f5/10879510480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb33b96b-fa2d-468e-899a-ae06cf7bc88d/92722701932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8628/9333/files/get_started_in_french_catrine_carpenter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1702/files/datesibakupofiduk.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/evangelical_systematic_theology.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/assumptions_in_qualitative_research.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/xubuzidazagaganobudi.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/luluwejojebe.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/rinunupujumoba.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_off0000657d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657D 5192 bytes
SHA-256: cdf61c746dc042146ce51fa20dd3a82ae41376c717d870fbc7f4f71d5ea87bb8
font_01_sfnt_off00007728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7728 14672 bytes
SHA-256: c74e0045671da08926c28492e33d2734486f77f50b183677b29eced822d393fe