Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20e68cb01dfc8ac…

MALICIOUS

PDF

43.1 KB Created: 2020-11-01 21:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c2aad5763f9e6827482b737bea946056 SHA-1: be6ca9ccd39b026d24ccdd08d437c27f1be0dcbb SHA-256: c20e68cb01dfc8acebdd08e32c4486793b553322e463106bf38fe59277d1bf82
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many pointing to disposable hosting or SEO-optimized domains, suggesting a link farm or phishing campaign. One of the primary links, 'https://cctraff.ru/aws?keyword=animal+jam+play+wild+cheats+2020', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains keywords related to 'animal jam play wild cheats 2020' and the URLs themselves, reinforcing the lure aspect.

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://cctraff.ru/aws?keyword=animal+jam+play+wild+cheats+2020 In PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/dd158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409098/normal_5f94a6131b3e3.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/davejibot_befil_fanevupolur_vijawu.pdfIn PDF document text
    • https://jasasenud.weebly.com/uploads/1/3/4/1/134131975/a59882e919e1.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/64312f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5f9e76e28c606.pdfIn PDF document text
    • https://rajerese.weebly.com/uploads/1/3/4/3/134387708/dubavikapuvunon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/84655173132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e04cfda-4e1f-40ef-9afd-b0349cf77181/vonajabam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6151/7722/files/tomorrow_i_will_date_with_yesterdays_you_watch.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_off0000694c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694C 5748 bytes
SHA-256: 48df65c775154aa011215569d4b8e66cde8a6fa9f0ca0a9cbf169102be505955
font_01_sfnt_off00007ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCD 10252 bytes
SHA-256: 0da4ed8092a3b7251c4c89dc63eb52ec20ea8ba550f7bd6f888cdbdaedb9e133

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