Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5850d07655d0d4…

MALICIOUS

PDF

44.6 KB Created: 2020-10-27 07:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 571748b41e4720d5bb03681213b269f1 SHA-1: 048af72f55fe89f54deef9091ec44fb6e4b6172e SHA-256: 0c5850d07655d0d474aa17d9acfe280cb9d2e97d20f69b37c8e3f82e58b3858a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.me/123?keyword=the+faith+of+anna+waters+movie+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f894a0b53952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378170/normal_5f9088a93ba4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f89d41ebb19a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f87259b8f82a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e45.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e45.bin)
    • https://s3.amazonaws.com/leguvefu/toronto_attractions_map.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/les_diffrents_types_d_analyses_mdicales.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/cultura_maya_arquitectura.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/72537477292.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/15777964011.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/liberalisme_dan_kapitalisme.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/57122978863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/53679499540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4646/0312/files/vigagojasitabaxataposowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4933/6483/files/monster_prom_stat_check_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4461/7371/files/drill_master_pocket_hole_jig_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b3a8003-e097-4579-a174-9c5d4c1f6cf3/vazaxis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa29c2e7-37bc-49e1-b32c-b12328fb192d/16686910263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82212da1-794b-4462-b6db-68a1d2c94779/nudofujuzukigit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/816b6189-38a6-49a6-b9a5-71def27d85ba/migibalatuxaxowi.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 extracted file (font_00_sfnt_off00006e45.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E45 5248 bytes
SHA-256: a5eafd90c0c8cbbbd678c24dad7bbb463d1002e3ca58aca3460a52872d0c1eae
font_01_sfnt_off00008007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8007 10800 bytes
SHA-256: f649a1e0051b71a8cbe84b336ac096854fe13cbd64b812bfa16f645aa2ceeade