Malicious PDF — malware analysis report

Static analysis result for SHA-256 4553e41f26697702…

MALICIOUS

PDF

70.4 KB Created: 2020-10-28 23:20:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8d2d8cbc00aa1a19d7348de24eebdb53 SHA-1: 66ebe367eea4a07413ee8fdd096fc3fc47289c6b SHA-256: 4553e41f266977024b2156f8f0acd24c07838386c4ceccf52d9583cbffa987aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document is designed to trick users into visiting malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=kingdom+hearts+3+centurion+trophy+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f88fe3fcfbb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f9147ac69abf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f93ede64b2d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368221/normal_5f89e80ca4f79.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/xodirub_jawanolujujal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416660/normal_5f95bd2042b4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388165/normal_5f8fd9e6b7a37.pdfIn PDF document text
    • https://kutusavirub.weebly.com/uploads/1/3/4/2/134265758/leraxilupijo.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/4700299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f8889f32f5c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5f897fa1eabf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416153/normal_5f963eb367fb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_5f96eac28e3df.pdfIn PDF document text
    • https://fexejolimoti.weebly.com/uploads/1/3/4/1/134131812/lesegepedo_gagemolosepamap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zupenafud/gosunumexusekagop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/simac_il_gelataio_1600_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/briefcase_allowance_dopt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7208/5926/files/92711284398.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/jezeg.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/ahmet_mit_kavim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2791/3640/files/bmw_m_logo_vector.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3339/5868/files/hoover_quick_and_light_carpet_cleaner_fh50005_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5312/5284/files/98508298259.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3CD 5572 bytes
SHA-256: 5903ae851982cd46c66ca3144d5deb97519a0cdd9cc09ec6aeea4c05810324a8
font_01_sfnt_off0000d695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD695 11492 bytes
SHA-256: ac8abfb246339063709858135585f943fa3a1a870b9084e0cc6590306f930f9b
font_02_sfnt_off0000fda7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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