Malicious PDF — malware analysis report

Static analysis result for SHA-256 f204792f2f6e13a4…

MALICIOUS

PDF

49.1 KB Created: 2020-10-20 09:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: b1d0bec975b36908d1c1df2e1eaba196 SHA-1: ee3d7c4d382b123caf51831f062831e7b89e99ab SHA-256: f204792f2f6e13a42d4d74f921c1bb558e450bfd14d8d5bbf406d05f6ce2b1b9
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://cctraff.ru/123?keyword=pixel+car+racing+mod+apk+latest In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f89f04b33e2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5f8df524a0127.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f8a7063ea7a0.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/1419066.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/sefaritonos-nukivafeka-retisebop-regaxumex.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/966cefeb0daa0b.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/tanufiminexovo_xijaju_sididubupupuwo.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4e0d994f.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/5734e884-4f1a-4970-9287-26a0e1b5a211/nakixakuwatonibegupozuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/530a7674-1581-4111-8971-f1b0681286b3/tikasodudasarorakisizamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89b1e8c6-8761-4d5e-9cf8-3ccd6402799b/niritezijebopubabudeles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edcfb61f-5e1a-4f1a-98fb-e00d05fa369e/zutunerekiligozukerunizej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0dab86b-0dad-403d-b9bb-bf06fb182f4f/71588551044.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50bff92b-6b0c-4cad-bda4-ded12f893298/lanodilipezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6833f60-66c3-4ce0-8551-85ab3b993bec/rabitugopotalekaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cb9771-069a-4c4d-84b5-11e6b2a3ac19/84046882851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/78726788625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/la_magia_del_poder_psicotronico_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6751/0436/files/rodilla_definicion_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8396/5619/files/industrial_attachment_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4075/4840/files/minn_kota_riptide_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7641/8713/files/how_long_does_cookie_dough_last_in_room_temperature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5849/0275/files/detugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/best_fighting_games_android_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6694/5447/files/arthrocare_coblator_ii_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5144/9504/files/dead_wood_elf_shrine_of_peryite.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_off00008077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8077 5524 bytes
SHA-256: 41a9e76d30e3c302ddb7c6034a8a172a4bd7f0e74a4616837d1817fe0ae1e2b9
font_01_sfnt_off00009324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9324 10644 bytes
SHA-256: bd0f3681fc5aa4a4712ebdcf386715c1c4e1c22922cca63d76ef219397407b2b