Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda24a4666bf02f3…

MALICIOUS

PDF

99.1 KB Created: 2020-09-07 13:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd52dba5b01cb220de3a84349007608c SHA-1: a01d63735ba8f68aff83c5ce5f500d02903c6b11 SHA-256: dda24a4666bf02f3de52b0868f5d23ba2a2fd82daeb3f47850289c5078794b3a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that point to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, appears to contain the same lure text as the malicious URL. The presence of numerous links to benign Shopify PDFs suggests an attempt to blend in with legitimate content while directing users to malicious infrastructure. No scripts were extracted from this sample.

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=industrial+attachment+report+zimbabwe
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/basel_iii_nsfr_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0434/9604/6752/files/sijula.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2150/files/75658117915.pdf
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/telephone_un_autre_monde_tab.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/nelepofoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/14829723767.pdf
    • https://cdn.shopify.com/s/files/1/0433/9856/1957/files/certificado_medico_sector_salud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9604/files/complete_scoundrel_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0438/7376/3496/files/tugazinadan.pdf
    • https://cdn.shopify.com/s/files/1/0428/4550/3655/files/sodakigev.pdf
    • https://cdn.shopify.com/s/files/1/0470/6254/8648/files/factorisation_worksheets_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/fi_zilal_al_quran_arabic.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_off00013e65.bin
8ae4d0567f99f64ade114ac05454c54db03b99e968b6e6646d7cfb024b88270f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E65 5532 bytes
font_01_sfnt_off0001511a.bin
9b3f0ae6cba071999ae0274ac4d89b6ea130bd481d8a868c8018c273b856d765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1511A 15260 bytes

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