Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b507c294f67abaf…

MALICIOUS

PDF

46.2 KB Created: 2020-10-17 21:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a59076b0b583e33d7ccfc62643d9fd1c SHA-1: b9e3a9817e232f65837ba627993ed30b82268741 SHA-256: 9b507c294f67abaf68954a8fb06ee0603bbc79c9149c4278d0427b1ef4ff8276
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.ru/123?keyword=chandannagar+jagadhatri+puja+2020+map+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f87d4905d577.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f8a5d598802a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f86fcc2c4d8c.pdfIn PDF document text
    • https://mepetimis.weebly.com/uploads/1/3/1/4/131483418/36cdc0d85d6e4d8.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/2956675.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/wiwiduwakuxu.pdfIn PDF document text
    • https://bakuwosir.weebly.com/uploads/1/3/0/8/130874569/c8851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f8a886519cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_5f893d6ecf5df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5f8848621e8ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f8b13fed7e05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f8800cfbc243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f87641b99368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f8866680fcc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f873f58aaa30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2840/1309/files/jifofisak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7890/0640/files/chapter_4_closure_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3544/6433/files/htek_2_meter_7_element_yagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/46715091657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9153/6288/files/mosaic_stepping_stones_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7362987-0f68-4e72-be91-d10fce68eb8d/9995007021.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_off000076c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 5416 bytes
SHA-256: c7d8b7116ee894fd98e0135a1163bb57b5b0df8357366911175a3fa45187916c
font_01_sfnt_off00008909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8909 9956 bytes
SHA-256: f25a51d19248a11cedbca1070e8f3b61dd50eb7b09e068d8065ee7aeda88f1b4

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