Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f553728406e317a…

MALICIOUS

PDF

52.6 KB Created: 2020-09-19 11:27:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19157a777bf5fe2718e54bdcdfc5fec1 SHA-1: 60061bbda713bc379c7e62523e282f1589aad99e SHA-256: 4f553728406e317aa58ec5f35ab62cf5556555129600a1af4d922aedadc3f8b6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=megabox+hd+1.0+4+apk'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into downloading potentially malicious content. The PDF also contains a link farm, further indicating malicious intent.

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.me/wix?keyword=megabox+hd+1.0+4+apk
    • https://f6a3af13-919b-4369-94fb-9ee259ae6fe8.filesusr.com/ugd/1c8c1e_dca6eab6847d4c8aa6e5427627cf785d.pdf?index=true
    • https://444a2bb7-97f4-4ef1-92e5-83fd6f84d83b.filesusr.com/ugd/21b4a7_f3e8bc280320407b944fa5a328d4291e.pdf?index=true
    • https://1bdc2626-4bc3-46c1-bca8-3beff2c22373.filesusr.com/ugd/f51585_1ffe059ea9a74d6e901c5b9ab8ac23db.pdf?index=true
    • https://9c38f396-e6ec-42fe-8779-4e9c6d3bb4a1.filesusr.com/ugd/97aff7_cdfe744a6f68462eba6430dc37204ce0.pdf?index=true
    • https://b714d89d-15a7-498c-900a-0827ee0b8c7f.filesusr.com/ugd/01e791_c17bb330fd824c2bbd494b86958ff74c.pdf?index=true
    • https://08c665fb-3fc4-47b9-8d53-cf5a32783b2d.filesusr.com/ugd/b0cb2d_26648ea0793a432c87ba49a4901bcf34.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0440/2741/2645/files/construction_methods_and_management_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4290/files/website_help_page_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/88469893690.pdf
    • https://cdn.shopify.com/s/files/1/0435/1203/7540/files/prokaryotic_and_eukaryotic_cells_venn_diagram_worksheet_answers.pdf
    • https://f30dda33-f828-4e19-9245-55830c067032.filesusr.com/ugd/28146e_0a320c20274346b19ea321e53ed80ab6.pdf?index=true
    • https://7a7e3f15-8180-4fd7-b1f2-c8c9542484f8.filesusr.com/ugd/db93e9_e844de08f18d4b5d82733a7442d7b4d9.pdf?index=true
    • https://fc242c7c-21c8-4352-b890-bd2b2c618673.filesusr.com/ugd/74c34a_7e94bbe7a2e94f1a986c556cd5108035.pdf?index=true
    • https://c7649d9d-1095-4d0b-820b-e76d3a02362a.filesusr.com/ugd/a91264_99718c8adc6f4569ac75d32cea69af54.pdf?index=true
    • https://408e3eaa-0243-48e1-a8bd-1f9a6771e16d.filesusr.com/ugd/a2d007_da3fda5695cf4fbb9f5bef8178d9d659.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd4.bin
fceb03442d1045732325d59b8c2f2e1f22da36169928585926fe462c57e6e452		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD4 5060 bytes
font_01_sfnt_off00007f1e.bin
3da8c7907182ba1e216d8fad1068bd244ef9dfcd112f7947f61ef790193110d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1E 10128 bytes
font_02_sfnt_off0000a20f.bin
4b52fd5da643d9c08cc0a86f773b2f024e3274f3f861dfcac100db1ef433cf06		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA20F 16164 bytes
font_03_sfnt_off0000b709.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB709 4324 bytes

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