Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08a3364c0a54a79…

MALICIOUS

PDF

58.4 KB Created: 2020-10-14 20:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f277dc959a9e8be8b9c217983cb32c44 SHA-1: 8ef6a9521181233cdee62dbcf64f7b4ae46206f8 SHA-256: b08a3364c0a54a79c0980c53e1b68dda9df2ae9e56d06438bd0c1ce7c38e86d4
134 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/pify?keyword=tp-link+m7350+manual+svenska In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f872bb5f295f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f872f532e7c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f87307cbb1e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f86f82669236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f87019f5a819.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/sesapilegipe.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/batagebexi.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/ruxozukozuvazu.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/3870745.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f86fefa90cbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f870a24bab43.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/0380d601-a6ff-41f5-9a47-d108a50cbf16/davigubulifipel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37abe71d-dd37-49cf-addc-822106ea8bf4/69040062620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b0602e-69af-4c46-9492-2beb409bb184/22178791767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1be6a0b-9dcb-4fbd-a056-ca56a7cdf93b/93401186837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b493530-2459-45ff-b3fb-1cf247fa65ce/pakogaxatasazabavafef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e51baaf-35e8-4ccf-bb95-08d5be01b0ce/pobafiwivapanovubunavelab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1795/6260/files/89697832811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0138/7936/files/mcquay_ptac_troubleshooting.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AA 5176 bytes
SHA-256: 4596c4d89903ac254a9293078b88762bda1c7070deb250b7e454c51032e77ea6
font_01_sfnt_off0000862a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862A 15500 bytes
SHA-256: 0ba7467b3e45202448567cad89cde68ca48fb55b703e3d172fcbcbf71b1915a5
font_02_sfnt_off0000b640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB640 16188 bytes
SHA-256: a513d0817f13c4d98934e48595d6e2ca4ccafdbbef0068b48bc57788ada2f81d
font_03_sfnt_off0000cb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB72 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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