Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a97c2464309c2f9…

MALICIOUS

PDF

39.2 KB Created: 2020-11-05 15:35:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 58c960e965c0f379821c64993868bee7 SHA-1: 462d21cc4c3d5b04f4bc0679426b9120d70e1608 SHA-256: 6a97c2464309c2f9762fa79170be8d61fb0983950a64fa9a484b03ea40eec302
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://traffking.ru/aws?keyword=virginia+little+league+state+tournament+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426262/normal_5f9bb511c0156.pdfIn PDF document text
    • https://vilomaranetuxer.weebly.com/uploads/1/3/4/5/134502128/wuzuwesosulu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_5f8a5489b8daf.pdfIn PDF document text
    • https://somadogex.weebly.com/uploads/1/3/4/4/134451143/maxerowoviw.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/vojibiwemaza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413696/normal_5f9b6cd142d33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413987/normal_5fa018ede05ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446650/normal_5f9e56e3e2365.pdfIn PDF document text
    • https://luwinititik.weebly.com/uploads/1/3/4/5/134587042/lulajijuzipona_wabesadiluz.pdfIn PDF document text
    • https://kakawugob.weebly.com/uploads/1/3/0/9/130969990/getaxewifa-visulewo-numunezigiwizo.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/06bfd8fb-2426-4994-aeb2-12aa5157bb15/sinabusuwosatetalebir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2882932d-cf8c-47bc-845a-b378cc262202/momeferiwixigasu.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/kedepejedekot.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_off00004c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7D 5332 bytes
SHA-256: c98cfd9f24616d994ae6438cac65d4b3ea16d01261844cb023cc2136bd0c2b15
font_01_sfnt_off00005e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 10332 bytes
SHA-256: eff13cdb5b3eaade0057b23ec1d54384cdc1c229aefadaf7681933ece8d4be05
font_02_sfnt_off00008196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8196 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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