Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c9c802af3a2dea…

MALICIOUS

PDF

46.8 KB Created: 2020-10-25 17:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 61d02053d0c0238650745de18fd11ee5 SHA-1: e673010fe05bf28341c6fc072723aec6c6ceba74 SHA-256: e3c9c802af3a2dea9e23ba416c6870eb83d9423f54ff504202df1b6b932e0528
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/aws?keyword=bury+st+edmunds+town+centre+map+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5f91e2563e8cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392444/normal_5f91d3e50bc09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379726/normal_5f955ce6b96e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5f8bbd79f11ad.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/aac5cabdaaaf.pdfIn PDF document text
    • https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/9615977.pdfIn PDF document text
    • https://gekeforoka.weebly.com/uploads/1/3/1/4/131438206/4510944.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/5204971.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370090/normal_5f8a63832a6da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8b30033ca76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f937230016cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000074e6.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000074e6.bin)
    • https://cdn.shopify.com/s/files/1/0428/1260/4582/files/cheats_for_township_game_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0371/0104/files/87163346362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9304/2355/files/lizotofololebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2210/6791/files/90308745596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9957/3410/files/my_talking_tom_hack_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7364/1895/files/supply_chain_management_definition_with_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/67832468016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9943/4394/files/74101482108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9692/3040/files/aapko_naya_gana_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dc1d15e-d6b6-47ce-82ef-88a7e1057f53/devitowep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/743a5942-c2e2-4569-90bb-4224e366f3ec/57603226608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9756b1-4a58-415a-a9ee-5a380f4eeb19/social_psychology_by_kassin_9th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb4f9570-b1ab-424f-89a6-210bda3a46ec/mudebakaruvetupet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16e8da48-3a4e-4373-8f5f-a2bd5038ec0d/35256640133.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_off000074e6.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E6 5512 bytes
SHA-256: 289ea7139caebf5c743207d67ec349e64d00db3539551b2982ef9881bb03b28a
font_01_sfnt_off000087ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87AC 10984 bytes
SHA-256: a0be33934ccfae6fa922839b170a621b4971a2972f0fef8f3d8d859f06be8aaa