Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab83650f56c782bd…

MALICIOUS

PDF

42.8 KB Created: 2020-11-05 15:33:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 9b31cd69b44ff75e236c30f93463815d SHA-1: 0ff796ff514ce05fe8667f9112bbc922ff57c466 SHA-256: ab83650f56c782bd473f4e081e85acec877cfe899e4b6f00c69550af461610d5
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/aws?keyword=fisher+price+garage+toy In PDF document text
    • https://jomunibudax.weebly.com/uploads/1/3/4/3/134342604/4816929.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3532345.pdfIn PDF document text
    • https://lerinajivawexof.weebly.com/uploads/1/3/4/3/134327174/dcf21b076fb3299.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/8725618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_5fa33f6a58ec4.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/1000608.pdfIn PDF document text
    • https://lebaburi.weebly.com/uploads/1/3/4/4/134491334/wugul.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/6169007.pdfIn PDF document text
    • https://rugeponejap.weebly.com/uploads/1/3/4/4/134487210/rapivisiwow_gujujuwabe.pdfIn PDF document text
    • https://zotexujefu.weebly.com/uploads/1/3/4/3/134322023/karerinono-wulabawovo.pdfIn PDF document text
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/e36046c9cb7d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/36ed3085-564d-4d79-bdf4-7a355d2dcd1b/65424360504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db5fe12d-f47d-4e5a-8a0a-2737a7b7528e/vefenuxor.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000682d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682D 5220 bytes
SHA-256: be1764bd29a816f61047725efab60edab4ab1681956b3cfab85ead0113f868bd
font_01_sfnt_off000079f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F7 10668 bytes
SHA-256: ccc3dcb669d282c1fb5b6a22ee60469cd126117b88933393c7edb6fe547a6885

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