Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea9d0ccc118e8ed…

MALICIOUS

PDF

52.1 KB Created: 2020-11-04 03:11:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c686bff73183b26d10739c5b5071003c SHA-1: 3f61a591b8837934b6782b34c93b347034f99031 SHA-256: 9ea9d0ccc118e8edec8917e70cff0edda4371e0b4f32afc0e60bf25c8b3aee98
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/123?keyword=sony+pro+vegas+14+free'. This URL is likely used to distribute further malicious content or phish for user credentials. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to increase visibility and traffic to malicious sites. No scripts were extracted, but the embedded URL and link farm heuristics strongly indicate a malicious intent to redirect users.

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 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.
  • 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=sony+pro+vegas+14+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_5f8d95c5007b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f87cb238d806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420244/normal_5f9b1ae8378cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5f87d864e83ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_5f87df9139153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5f895a1ecf275.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/resesitakim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f91ddb2c1689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378834/normal_5f8f55908c772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373753/normal_5f91fa4d393bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_5f9542d749faf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393641/normal_5f98d8c5abf93.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/7f06198d-d31f-4a7f-b6a8-db1639492e1e/36.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e730660-0d07-48b5-b52c-770bc337c274/88474608593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9709/4819/files/pdf_ke_word_apk_android.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_off00007e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1E 5444 bytes
SHA-256: d144ab0ba549b607bd9fe4a172ee189fefb720eb8d33496c2c01da42bdb596a3
font_01_sfnt_off000090cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CF 16040 bytes
SHA-256: 3eedce64e601e47f478253bb77677cfd144a2345d47579cc8c6c3dcd41b6bfa2

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