Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20ae8e2db2af0cf…

MALICIOUS

PDF

69.6 KB Created: 2020-09-22 01:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dacfff83257da08cd15c1d85f06db5c3 SHA-1: a18f95ad3a18b4046004185f567142fcf007d801 SHA-256: c20ae8e2db2af0cfa1ffa241294f6ce5c3cea4c90281b96c549821c76a87b934
154 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that appears to be a lure for "Spectrum tv guide owensboro ky", likely intended to trick users into clicking malicious links. The PDF is flagged as malicious by ML classifiers and heuristic rules related to redirector links and link farms.

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.cc/wix?keyword=spectrum+tv+guide+owensboro+ky In PDF document text
    • http://bakoxoka.living-from-love.com/uploads/1/3/1/3/131378776/tozoz.pdfIn PDF document text
    • http://sanuv.galsforcal.com/uploads/1/3/1/4/131482952/niroboxefuke-bikokepidi-mejawefetav.pdfIn PDF document text
    • http://lixorafu.corneliapeckart.com/uploads/1/3/1/3/131379296/kagenatidiwotogasas.pdfIn PDF document text
    • http://vutit.jbelle.com.au/uploads/1/3/0/7/130776167/f3d9da3c6191.pdfIn PDF document text
    • http://files.ganjaglowllc.com/uploads/1/3/0/8/130814749/1750965.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://cdn.shopify.com/s/files/1/0465/8040/0295/files/77503252508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6251/6122/files/what_is_a_8801_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8216/2084/files/arere_ekkada_female_version_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/67158147532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/vivana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9652/9313/files/brahmacharya_in_kannada.pdfIn PDF document text
    • https://f26a88fb-c2bd-4a9e-b2f2-a3a8abb33b8f.filesusr.com/ugd/625844_fd329d435405478d99e92436a67e5b39.pdf?index=trueIn PDF document text
    • https://e59744e8-53aa-4a7c-8c9b-015557d007f7.filesusr.com/ugd/5b9a87_2c7418670bae406092447488f483e7a9.pdf?index=trueIn PDF document text
    • https://ab2c79f3-d4d4-4a78-91df-6d344a9b6c23.filesusr.com/ugd/90423f_1c807c5dcc694744b482261df61dd9d9.pdf?index=trueIn PDF document text
    • https://a80a4a1a-353d-4354-9b0c-c4610b401f5a.filesusr.com/ugd/c0fca2_e6f415501dd240a48a373f9e3efcd97d.pdf?index=trueIn PDF document text
    • https://1a945fdf-3f16-4b72-8761-a2b35f4cb85a.filesusr.com/ugd/daca0d_8c6d2cc75ec84b9daa99523c24a87181.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB586 5592 bytes
SHA-256: 36e72feaf2c9da47cd097895b52f963b466539c843a6e11165b26d2e020e20ae
font_01_sfnt_off0000c88c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC88C 15696 bytes
SHA-256: bedd8e468fda7835ce7e167b200039702f50dad5de58512320d93477e18df3e7
font_02_sfnt_off0000f908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF908 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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