Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e605ef54103aef…

MALICIOUS

PDF

48.7 KB Created: 2020-10-23 10:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: f899feff0a76fb96e4b8d2e120b0ab7a SHA-1: 58e00b44d3ac9346b2607314c18c2f77d732970e SHA-256: c7e605ef54103aef97a8b254b743cf8c2e43b649edb507383c64a5e2ffaa2ff7
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://gettraff.ru/123?keyword=chronicle+of+a+death+foretold+pdf+spanish In PDF document text
    • https://ziwarojuwetupo.weebly.com/uploads/1/3/4/3/134343479/soxibusobesizetogete.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/6916922.pdfIn PDF document text
    • https://xigokerurubupa.weebly.com/uploads/1/3/4/3/134312623/9e390d92e75.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/magusewuk.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/vuranudizol.pdfIn PDF document text
    • https://relogeseji.weebly.com/uploads/1/3/0/7/130739887/5754235.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/5850aaa8abe05c6.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/8353683.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/vadubisepa_kaxezewoseteto.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://uploads.strikinglycdn.com/files/851dab1c-c70d-4cdc-9952-ca72c8ee9a93/bodukigedepuwizivuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6603a3-b014-40b0-9c78-00516a55abca/99461094360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1128eaa-e6ea-415b-88d1-34ae606dc978/wenasuwipojupaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33af7750-3d9d-4d33-b542-9bdcd448da82/6.5_grendel_load_data_speer.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/teaching_english_to_spanish_speakers.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/zimadomejuwipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3049e131-e4ec-401d-b3b6-29303b51555d/zaliwexur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01d96811-5280-4647-9f28-3c14e43773ca/a_cesta_da_dona_maricota_sequencia_didatica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0ed39f-cf0f-4fdf-8d97-5b7ce35d0cdd/zanezu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6e62b51-4ac4-4376-9f41-a117bc849d20/7155840797.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/31968052270.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/48796707882.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/audio_amplifier_design.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/78808304860.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_off00006eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB3 5052 bytes
SHA-256: dddca275cf3247ace48f9ed1f3f9207ad5fcd6969508cbcc700cfe97a43725a4
font_01_sfnt_off00007fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCB 11368 bytes
SHA-256: 6666f4baa9ef8dd66e0ae7adf82f88e7c79e09215f79101b0d27451632a67812
font_02_sfnt_off0000a55b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA55B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333