Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad626c8718a2763b…

MALICIOUS

PDF

55.2 KB Created: 2020-08-11 07:34:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9edac4b68c7abffe5ada10468b2ffe76 SHA-1: ef9bba315103b2bbb52266aa647854ba1271a6d8 SHA-256: ad626c8718a2763becb654bcd0335866de5e2f0f77405ee63dc62ff4ac11d5f8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.cc/pify?keyword=artificial+intelligence+in+insurance+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on various domains, suggesting a link farm designed to obscure the ultimate destination and potentially distribute malware or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=artificial+intelligence+in+insurance+pdf
    • http://xuribozot.thunderflatsfarm.com/uploads/1/3/0/7/130776208/38b9f749fd362.pdf
    • http://files.slatingtonbaptist.org/uploads/1/3/0/7/130775441/257e238ee.pdf
    • http://files.hillcountrycommunicators.org/uploads/1/3/1/3/131379356/bd4a3938abdfea7.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/sole_proprietor_business_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/67509708439.pdf
    • https://cdn.shopify.com/s/files/1/0440/4350/1733/files/wojupemakora.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/warframe_omni_ammo_box.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5645/files/98306966301.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/44782098470.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/lxxiii_in_roman_numerals.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/sort_numpy_array.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/bamizokemuvo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/bare_necessities_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/2289/2711/files/ketig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdf
    • https://cdn.shopify.com/s/files/1/0434/9611/2294/files/datovirurujomuginolem.pdf
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/12550826688.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_off000099b2.bin
5d7d4525020c1d4e0a408b0e51386e5bb22d008434f271c3a430d80029fe894b
pdf-font-stream PDF embedded font (sfnt) at offset 0x99B2 5312 bytes
font_01_sfnt_off0000abcc.bin
5c3605d958368d36d069ccec1a39bc083e40786dcc9797f2888cfffd7073a03e
pdf-font-stream PDF embedded font (sfnt) at offset 0xABCC 10548 bytes