Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b225c34adcda22b…

MALICIOUS

PDF

47.6 KB Created: 2020-10-20 16:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6d686e92c15e07d5bf7dc9264e570c0a SHA-1: b007f12aceb7a26ef633a29ed3f9bf6dc7e4ea04 SHA-256: 8b225c34adcda22b3f1298f6bf8a0a90ae6f10b752aa6666f6adbff54cdc66aa
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=reglement+interieur+restaurant+pour+le+personnel+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383295/normal_5f8d5c99241bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373508/normal_5f8ed4252ed16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370057/normal_5f89df75cb9a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_5f8cff948e729.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8702731d567.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f8e8cbd4310a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384480/normal_5f8d70e2a006f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5f8af442150d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5f8a773b4bd95.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/zejegovabu_fodonepojugesam_gadugasawazo.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/futuvojebun.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/6023986.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/fodevezewipozofidepa.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/mezaguwok.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/6981310.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/5eae31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381536/normal_5f8b68a0c664f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382627/normal_5f8bc81e5d7b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f87133424fa3.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000784e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000784e.bin)
    • https://cdn.shopify.com/s/files/1/0502/0719/5311/files/how_to_send_smaller_files.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/lafas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9031/9804/files/sram_guide_rs_hydraulic_disc_brakes_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4890/6145/files/87529464034.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_off0000784e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000784e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784E 5368 bytes
SHA-256: adbc75c35f7d6b2d183de4f3ae5ced3f875cc443e324c8962536bc302bf5a1fd
font_01_sfnt_off00008a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7B 11416 bytes
SHA-256: 682acfbb6387ddfd48a3b977a8ebd030a047ed32576c1d5863c04774a200df93