Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8501fa0d3915bb3…

MALICIOUS

PDF

51.4 KB Created: 2020-10-17 06:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 91f9eea5761a15ddaae6f5ba7b5b4539 SHA-1: efa1c872af8ed437b0079f0f9343e1553c579ae2 SHA-256: f8501fa0d3915bb3db593758a8c7b35e5a24a47b04e58d1854be9cb68aefd89a
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.me/123?keyword=mitsubishi+outlander+2020+manual+repair In PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/tixobenudofezibet.pdfIn PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/tabisuterob_ranojinaronev_mikejomofobidum.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/85f5a0.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/pafatojuj.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/kedoxezezaj-temolej-zunemalavorun-mutelokowomimi.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/tojajixubunigerus.pdfIn PDF document text
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/kirib-rovuwuwa.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/449102.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/c893a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368998/normal_5f87e190bd01a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f89ccf737e95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f88874be236c.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/cbb210c8-c9cb-4874-bae1-3e2fa350e011/vudowafisagekegoluwatinuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11b4eb58-61ec-4e05-a59b-60e7ae4dc51d/tabla_de_funciones_trigonometricas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32ec4c78-ad5e-40d8-86ef-395186651835/lubatev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59b4a8e0-4469-4b63-ae03-7d6b4ffe4562/vololurumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28430a73-4876-4dc4-8a93-18b0f2152ab4/nejezavemuniwej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8be086b5-3788-4a58-8f2f-a2056549002e/43479191651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd28da87-2fef-4b48-9036-8dff2448622d/megenipexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720ba40f-6da4-4833-b49e-54886221fbc6/44818991870.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_off00007be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE8 5500 bytes
SHA-256: 593db01bb16d627441074174855ec510445949fe20581c48cad51aaaf1d41203
font_01_sfnt_off00008e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E56 10424 bytes
SHA-256: 7c026360943d966700587bad725602d3561b5fd1846439eb2466b9eb48a0c1bb
font_02_sfnt_off0000b1f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1F4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333