Malicious PDF — malware analysis report

Static analysis result for SHA-256 128564c6f4bb1be9…

MALICIOUS

PDF

46.8 KB Created: 2020-11-08 18:23:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 5dcbf181c053688822e6a30e7fd30161 SHA-1: 124d77c85a6e1561fe066512ac0428b7f7e49b05 SHA-256: 128564c6f4bb1be91bd2820b872d378e35e0736f3401172225cb62db76fd9408
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://traffine.ru/123?keyword=devil+in+the+white+city+free+pdf In PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/8451257.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373297/normal_5f8e292c74379.pdfIn PDF document text
    • https://sakeneri.weebly.com/uploads/1/3/4/3/134339958/55d0265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5f96279c8cba0.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/6796302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5f8877f4ded27.pdfIn PDF document text
    • https://gexaxiwiwa.weebly.com/uploads/1/3/4/4/134480231/zenovuwubirigil-xijuraf-kusiwidigip-wogigil.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006982.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006982.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a062.bin)
    • https://kejepototoga.files.wordpress.com/2020/11/jonirerurataxi.pdfIn PDF document text
    • https://janapag.files.wordpress.com/2020/11/atlas_of_morphology_and_functional_anatomy_of_the_brain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5724dc9-83d5-4e14-ab80-bdd2ac0026eb/9173523047.pdfIn PDF document text
    • https://rabewinu.files.wordpress.com/2020/11/67394420393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f58037be-2bfc-46e4-9140-ee54924af384/peguxedikoxosizolopo.pdfIn PDF document text
    • https://wabiwinugaw.files.wordpress.com/2020/11/wiwavuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86473247-cc96-482b-9202-b53a1802e4d5/dibanepogufubije.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.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_off00006982.bin)

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6982 4784 bytes
SHA-256: 5b6b6dd4611e86b4fb57ba74dd7bb0c7b92bab2296b4b1879470f773184273e9
font_01_sfnt_off000079d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D8 11536 bytes
SHA-256: 2b97ac0bf962eb3bd4c5ae5db3c0bce035d483145565e59f2aefde737a784954
font_02_sfnt_off0000a062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA062 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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