Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed463dcad884819…

MALICIOUS

PDF

46.7 KB Created: 2020-10-25 08:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 083dc5aa907b667184bd2a5ebfd64d8c SHA-1: aee7fb1bb8d8b229fbad2c82a3f839032a04ed45 SHA-256: bed463dcad884819bb5bb86eb0ef75059d28b4fc1e625f8fb319e84c4e713622
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.link/aws?keyword=synonyms+and+antonyms+list+a+to+z+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f9438f86a6ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f8a7ef3e9edf.pdfIn PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/9513880.pdfIn PDF document text
    • https://tabuxeniki.weebly.com/uploads/1/3/2/6/132682737/dobixizaduba-famezu-suletew-kelazuwejubute.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/78f7b7ac897d.pdfIn PDF document text
    • https://porimejonawi.weebly.com/uploads/1/3/4/3/134368737/480afd9e0ef83.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/7911743.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/ad4e71b5-8680-4089-a039-e7eb5e558979/88257359696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd8d0a4d-fa53-4d0b-b1d7-e23544c9d839/ranarovobepulaziwofugin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5dc0feb-2e94-4d0b-8f46-ad3c8cded6a7/20428737504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad7d6d76-5b09-40c0-8708-2b9f8231990b/12697929545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4182e587-1516-4bf5-a726-ebf9247bac2e/35770782668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9462/0333/files/kirchhoffs_voltage_law_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8309/3910/files/rosary_joyful_mysteries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8517/8027/files/dip_pen_calligraphy_practice_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31f1911c-9eec-4590-bdc5-f655fe090056/char_broil_assembly_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/606df9f0-1447-4e03-8eb7-88b3fe247c91/40048502287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8144c603-ab70-45c4-aa18-099e3f4cfa9c/anadolu_arkeolojisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1431b7f5-20d2-423d-9556-9809d08d523c/xusobinew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57385721-805f-44af-a89b-4e8f8a0228c0/30421329908.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1344b10-cc4c-4680-ac51-14605c6be534/mufarikubuforakijaxege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90906700-0344-4f7d-b2f8-60c27f647841/19237754644.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_off00007568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7568 5344 bytes
SHA-256: 8acc15b1ac311e4113a9fd6b3e52df53ccbd89b293101e0aca76229dfd81d7f9
font_01_sfnt_off00008798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8798 11204 bytes
SHA-256: 1be1ff46078802d0a2373b1b0c7bee621b75e64ad7f7d5912c2567449035fd20

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