Malicious PDF — malware analysis report

Static analysis result for SHA-256 459b7ef6bc3f6299…

MALICIOUS

PDF

47.6 KB Created: 2020-10-29 11:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: 1b00d478b548d7d65c69ab75446db1cc SHA-1: bf52a2c687f6a9affba59f9f9cd8cda342e86c9c SHA-256: 459b7ef6bc3f62990f85c6248b9a98086ab54fe75c8058ec2927e2dce2dcea24
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.cc/pify?keyword=samsung+46+inch+tv+dimensions In PDF document text
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/pawiwedikad.pdfIn PDF document text
    • https://kebakiwaranug.weebly.com/uploads/1/3/4/3/134317860/ed0209d54a8.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/9730997.pdfIn PDF document text
    • https://sevivuninuk.weebly.com/uploads/1/3/4/4/134459749/powito_lodom.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/zipape.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/nasavupu.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/voxifajovidut_mogezilosivode_xifute_siselus.pdfIn PDF document text
    • https://wejibuxod.weebly.com/uploads/1/3/0/7/130740202/6964891.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/e02283dd85523.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006a63.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006a63.bin)
    • https://uploads.strikinglycdn.com/files/aae990ad-0613-4ee1-946a-27a81f8f881a/42806076393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26e8597a-6596-44c6-b34e-fb84eab650ee/60945161069.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/guxameben.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64d86f2-7f9c-4723-80cf-2737bfca778a/europe_in_the_middle_ages_crossword_puzzle_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/lei_wang_texas_a_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34ca4b91-4f36-45e2-a500-fc6d5e1411d9/68603890582.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/90015012326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a63f41e3-d952-4f9b-b2d3-121a9f97a270/mofovatevurutetej.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/tratamiento_de_angina_estable_e_inestable.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/cctv_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/drugs_safe_in_pregnancy_list.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_off00006a63.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A63 5632 bytes
SHA-256: 486f5e3b111ecb9e5c5d50dbe356c5a1800cbb9ce484928936f95f418af3c80b
font_01_sfnt_off00007d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D75 3024 bytes
SHA-256: bd21c34e746f35228501981b569277ab09e6813e8adf72ce0154fea927cbed0c
font_02_sfnt_off000089ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FF 11388 bytes
SHA-256: e52110ed639992d98c6c4cac7dd71795e4410756430693fa8da7e9d324652bc4