Malicious PDF — malware analysis report

Static analysis result for SHA-256 60cac07dc59702e7…

MALICIOUS

PDF

52.0 KB Created: 2020-11-02 19:58:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7ba83a626e38d28638f4ac2d9f22fa09 SHA-1: e175916d24c0298c47432b84ff28338fc5f0a576 SHA-256: 60cac07dc59702e7a50091bf94c279a82696f0f4e5f361cbffde25d72373eaa3
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to a 'Bostitch cordless drill set' and a URL, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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://gettraff.ru/aws?keyword=bostitch+cordless+drill+set In PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/1ffbaf9902f.pdfIn PDF document text
    • https://pexulowiseguwuz.weebly.com/uploads/1/3/4/3/134391342/potewuwejodelefufijo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381971/normal_5f959cd7658c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_5f98969f9ff40.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/1/0431/6499/1649/files/princeton_library_ma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2186/8449/files/nezod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b50355c7-cc42-44c6-bfc6-4d9982578850/kingdom_come_deliverance_uralte_karte_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/0482/7050/files/86172521437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb29eba7-e1fa-40a7-90c7-620ec87aef94/xuvabov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7232ee67-705e-4250-b585-346b98a631ec/tofabixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/mcdougal_littell_geometry_for_enjoyment_and_challenge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f51c2c1f-c066-4e1c-b0fc-ecf92f75c2f4/39175981324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25a12c2a-917b-4adf-89c4-0c2757292a82/amelia_bedelia_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7197/7640/files/dirokafobibujonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e68e53b-37fe-49d5-bb8e-8217ee154f4c/goedkoop_bestelbus_kopen.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_off00008d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5E 4868 bytes
SHA-256: 638200fdad56f43cd20c4b0e15b6b9bdb32d72debf2685ac0e67a885bf5addf0
font_01_sfnt_off00009de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE5 10900 bytes
SHA-256: 4a5182a22d335af84b9dde8bb74506658afa99b25510ef84fad9666b8ac02e2d

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