Malicious PDF — malware analysis report

Static analysis result for SHA-256 5148c8eab56f71b3…

MALICIOUS

PDF

40.2 KB Created: 2020-08-16 19:38:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70e3df0c32b9eff09c1b974eaff8a603 SHA-1: e258396e09054ff6b080da2e10789fadf33a025a SHA-256: 5148c8eab56f71b3c5d11cb6e98c1a76165027334515a3c32b17ba170c242242
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a technique often used to direct users to malicious websites or phishing pages. One critical heuristic identified a malicious redirector link pointing to 'ttraff.com', and another flagged the document as a link farm with many external PDF links, predominantly hosted on 'cdn.shopify.com'. The document body, though partially corrupted, contains text related to 'Logo quiz ultimate answers' and the redirector URL, suggesting a lure to entice clicks.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=logo+quiz+ultimate+answers+airlines+level+1
    • http://files.burgandyviscosi.com/uploads/1/3/1/1/131164520/4a6647.pdf
    • http://files.melisseairesbooks.com/uploads/1/3/2/6/132681409/jifulewewodigew_gafuwu_majekibavarepit.pdf
    • https://cdn.shopify.com/s/files/1/0431/8144/1181/files/3d_animation_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1955/0370/files/776587235.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/xigimibazemoziji.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/bioavailability_bioequivalence_guidelines_usfda.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7943/files/74128094959.pdf
    • https://cdn.shopify.com/s/files/1/0430/5856/1175/files/administrao_financeira_e_oramentria_para_concursos_pblicos.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/xageratuxekudasolejajomi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/xuzapaju.pdf
    • https://cdn.shopify.com/s/files/1/0437/3653/1095/files/az_302_exam_dumps.pdf
    • https://cdn.shopify.com/s/files/1/0429/3869/5846/files/xixilegiwujone.pdf
    • https://cdn.shopify.com/s/files/1/0429/2437/6227/files/chrome_for_pc_64_bit_setup.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e1e.bin
ff11450c79ab03fa4b823e75eb71356fbc1f59c7a5a3f50ea99ad2dca8fdce2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1E 5324 bytes
font_01_sfnt_off00007042.bin
5df9d0d53a9cf88192670ddc2627d95758477942755c4e65b074fbbeb98e9ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7042 11076 bytes

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