Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb8994b9c3b9548f…

MALICIOUS

PDF

60.9 KB Created: 2020-10-25 08:02:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 80582acde1753b62dbaa88ca2f2c02f4 SHA-1: d03a10e3c3c3a15548556b37fe71e0ad0db747a2 SHA-256: bb8994b9c3b9548f57bde6c2c1d762f3fd7e94ba320c4799f40f6d12018cbe8f
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://ttraff.link/123?keyword=casio+tough+solar+manual+2790 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407327/normal_5f9382f4efa4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_5f8eb3a24855a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383567/normal_5f8f535f7f1e0.pdfIn PDF document text
    • https://finijuzado.weebly.com/uploads/1/3/4/4/134444754/04ba4b0540edab.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/pasejatukuzoza-rudufosajupelap-vupafubudefuwak-rovido.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/6677827.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/1/0498/9199/9926/files/element_soup_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1632/9672/files/xasuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/klepsydra_pogrzebowa_wzr.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/indianisasi_di_asia_tenggara.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/mezevowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/nys_physician_profile_lookup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7534/6847/files/53551992560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b8c01ee-f01b-4f68-8d4a-bac612521819/62712277297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a9f339f-d4d7-4540-988f-48b2ca065121/goruzura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bad8082-dc50-4056-8a2a-ade2ce61b9a6/zaseremutimobagideju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/229212a2-d051-4d67-8af4-9b755c7d6116/sesanibopikuzazuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72939233-4e10-455b-a17b-a874c78ecc6d/92611710040.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 2896 bytes
SHA-256: 9cd38b437c4a2d8519cf1b8a301fa578bab95e8ffc7dd47fc7126b5c86720859
font_01_sfnt_off00008631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8631 5516 bytes
SHA-256: c65b532c380e0ac94d8460b7dfe7319b4d5611da7d8f51457a16b2faf77d7b1d
font_02_sfnt_off000098c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C0 4476 bytes
SHA-256: cede79b69b00844403d4a9a517f1ba036ec92d4c94672646a3a1b56d9246e01a
font_03_sfnt_off0000aa25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA25 11044 bytes
SHA-256: 720a147b76b2642e0842384c999837a04dcda238cd867445662b999136e70730
font_04_sfnt_off0000d025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD025 16204 bytes
SHA-256: 581c0268a3cc9df95828ceb030693f64bcb03969c1cab585f80954d7fb3b146d

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