Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb4b7f2cfa617704…

MALICIOUS

PDF

64.8 KB Created: 2020-10-15 00:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 88a6691cfb4063fa09fa8c9afd923694 SHA-1: 72266cf0a23d4793d1b14cb84558597a06a1fab9 SHA-256: fb4b7f2cfa617704d0a818145500009692f4196c2f060a0d0ca53620c192aa5a
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=god%2527s+plan+for+man+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f87408f4aac2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f873320d6a6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8773642c781.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/mavovusegizusenaf.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/3724686.pdfIn PDF document text
    • https://jedarixires.weebly.com/uploads/1/3/0/9/130969076/pofonan_zaredaz_nilevowezisa.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/d96ddb407408.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/rinedufiwaditarip.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/vateranosuzu.pdfIn PDF document text
    • https://site-1040376.mozfiles.com/files/1040376/8311426383.pdfIn PDF document text
    • https://site-1042983.mozfiles.com/files/1042983/sapupapixo.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/099fa0fc-eefd-497f-b538-1debba364988/73787099977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f120614-8917-4151-ae5e-fe1a891b69f7/zuxaviwilixojim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fd0a441-beed-4632-a4b4-5f1398f845a9/foveja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1594/9466/files/pekizufok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2335/8888/files/66812987553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7412/0597/files/wabobogurubagido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1795/6260/files/j_c_penney_store_closings_in_georgia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/7477/4950/files/womens_role_and_importance_in_the_french_revolution_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3827/3447/files/high_school_dxd_vol._1_-_diabolos_of_the_old_school_building.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D6 6440 bytes
SHA-256: a606a6dede3b99472d2ac97761204782646b5f75106b48d1abccbe9a99ca9a4c
font_01_sfnt_off0000b8ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8CA 5252 bytes
SHA-256: 4bf4cbe60319811040da2b93cd504a8ea4c4c8f79add525fca5c83567ee12b88
font_02_sfnt_off0000ca9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9F 13564 bytes
SHA-256: f7f9a186c00d9cbafc209cec428f0262951618cd202921a68140003abcb30ac8