Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd9e142df46b970…

MALICIOUS

PDF

76.4 KB Created: 2020-08-23 19:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d612d601b35c5364b82d3c1723e6a3b SHA-1: 1e881d28104447cc9a70031ceb64ec57c1403d9c SHA-256: efd9e142df46b970d785eaf70c657ccd9af469e05229c8c7165d3fb397de33c7
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating that it directs users to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Australian passport document number format' and the malicious URL. The PDF also contains a heuristic firing for PDF_SEO_LINK_FARM, suggesting it's part of a larger network of linked PDFs, likely for SEO manipulation or to host malicious content. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=australian+passport+document+number+format
    • http://figimuxep.sunsetskinboutique.com/uploads/1/3/1/4/131454215/nazile.pdf
    • http://files.pammiller.co.uk/uploads/1/3/0/8/130874284/4178782.pdf
    • http://files.deltatechindustrialpark.com/uploads/1/3/1/4/131483234/bekuwomodifened_popejuw_zonumiwe.pdf
    • http://files.kemslashes.com/uploads/1/3/2/6/132682899/kuzadifa-tawususipirojor.pdf
    • https://cdn.shopify.com/s/files/1/0465/9645/6613/files/64015248979.pdf
    • https://cdn.shopify.com/s/files/1/0434/1904/1954/files/react_native_action_sheet_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/kuwutikalux.pdf
    • http://zumato.yazan.people.ua.edu/uploads/1/3/1/6/131636755/8069456.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/gexelebek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/255293981.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/43905927619.pdf
    • https://cdn.shopify.com/s/files/1/0435/6043/5873/files/29379613916.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/76772017878.pdf
    • https://cdn.shopify.com/s/files/1/0432/8708/5220/files/hssc_lab_attendant_result.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/lowipudipo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3810/6023/files/no_excuses_brian_tracy_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0460/7773/9172/files/86111377166.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc82.bin
bd9c9940fd1b94b6538c98a603d888ec44e3085e5de85a1cfe0a61f426735cae
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC82 5432 bytes
font_01_sfnt_off0000dec9.bin
1640fd32304170638016e5f698c224b2630fec06af0c09fa4402e242fbb745fc
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC9 8436 bytes
font_02_sfnt_off0000f660.bin
093e564feea7910a3df6ec870bfe5f3423e9cf36b7bec772c5db26e57f13515b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF660 14364 bytes