Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6122282807a8774…

MALICIOUS

PDF

48.7 KB Created: 2020-10-27 19:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 457dc8f3a7d96b4a2e1c88e841b5ad9c SHA-1: e0e78be0620c6677466f3bd2e52dd64a6d042bb6 SHA-256: c6122282807a8774b200648011a18e896f4454e3ff26cb893c01bd7d5f2ff495
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector, suggesting an attempt to lead the user to harmful content. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm or SEO spam campaign. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs points towards a phishing or redirection attack.

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.ru/123?keyword=west+bend+toaster+egg+cooker+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5f8a1c16e830a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388608/normal_5f8e6372ecec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_5f95d2eed2316.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382952/normal_5f94bf0257d84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382189/normal_5f8cbbb59c09a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f8762e55dc3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5f8983a1276f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392207/normal_5f8fc19a4ac23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f8acc19a991c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382773/normal_5f924f7aac271.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/winepogor.pdfIn PDF document text
    • https://bowonusafepa.weebly.com/uploads/1/3/4/3/134319531/e51cd792a6322a0.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/5591919.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/57602130269.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/pinesuzutu.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/oil_bunkering_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/cardo_packtalk_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a56f045-8d2c-4a38-8f64-2e5889a09b57/85911964135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62aaf68e-a43d-4fc7-9364-d210338ff142/25587342057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1aa6187-5568-4d83-9f4f-1f396aae277a/kipotutig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eab5580a-7b67-46d3-b55e-0e09bc62abbf/41044525776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1789/0715/files/26900460676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/jenemokejada.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_off00007a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A93 5476 bytes
SHA-256: a0eedaf000cf7f65a045c01c915e978b0f740a63890882a8e99e3608e648e49a
font_01_sfnt_off00008d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1E 11244 bytes
SHA-256: cad0166414b4a83db626a1a31370b95a23c7149f441e0ca8546bde94017f0f87

Open this report in the interactive analyzer, or submit your own file for analysis.