Malicious PDF — malware analysis report

Static analysis result for SHA-256 28c2e19ea0bdfc6c…

MALICIOUS

PDF

65.0 KB Created: 2020-08-08 06:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9b77c4924140b21c590790951fbe66f SHA-1: 6229972406b5eb380289c00a0b8c40d3967a1b5d SHA-256: 28c2e19ea0bdfc6c356562f1e3cda89361bc9ad378aa297a84c05442ed6defdf
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=history+of+seventh+day+adventist+church+pdf, which is likely used to redirect users to further malicious content. The document body itself is largely unreadable binary data, but the presence of the malicious URL and the link farm heuristic strongly indicate a phishing or redirection attack.

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.com/pify?keyword=history+of+seventh+day+adventist+church+pdf
    • http://xowexi.kayandthechaos.com/uploads/1/3/1/6/131607163/resulux.pdf
    • http://nejesal.sardisdoorway.com/uploads/1/3/1/4/131407227/1016855.pdf
    • http://files.nancytangles.com/uploads/1/3/0/7/130740480/lazenumigulub_wusemizigiduzi_bulafikozomat_webudob.pdf
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/47919795109.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/80568034932.pdf
    • https://cdn.shopify.com/s/files/1/0434/3401/6924/files/wiwijil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/6592716238.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/gowumaxogu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4127/4521/files/letter_of_instruction_sample.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/brick_bonds_types_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/4963/9327/files/momaxemovituderagogigon.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/pujojuxolanarikub.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/fumurokepe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6231/files/lamen.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_off0000c120.bin
ba58e6cf11c75e063174e53459e31a32b285b800f1540c81a352d936bda41ad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC120 5336 bytes
font_01_sfnt_off0000d34b.bin
caa2784c1dd8b6a88a98a18bd369eeb8cfdc9e4312f134ee54bd1983efc0d73a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD34B 10376 bytes

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