Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d29f2437e2c4a6…

MALICIOUS

PDF

46.9 KB Created: 2020-08-28 08:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b536ae1a92d2488890512408d1ec920d SHA-1: 04eec02969a628cd066e402ffa474107d0d02d09 SHA-256: 88d29f2437e2c4a603c245cddbe05a63cb538c43600bee95bc37f422d62499bd
150 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm or SEO manipulation, with numerous embedded links to external PDF files. One of these links, 'https://ttraff.club/pify?keyword=hamoodur+rahman+commission+report+in', is identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body contains mostly garbled text and URLs.

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.club/pify?keyword=hamoodur+rahman+commission+report+in
    • http://files.morpheusandiris.com/uploads/1/3/0/7/130738569/76a393.pdf
    • http://files.kccsvg.org/uploads/1/3/2/8/132815015/juxikedotix-banenig-neporudaw-nixawaxajupida.pdf
    • http://files.stmaryschurchbrighton.org.uk/uploads/1/3/1/4/131407704/7286664.pdf
    • http://files.handsinpresents.org/uploads/1/3/1/3/131380316/fimulixavo-punivutubirot-rijuvufazim-lodupudusixu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/1432328739.pdf
    • https://cdn.shopify.com/s/files/1/0432/8429/9936/files/malta_smart_tourism_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/most_commonly_used_phrasal_verbs.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/paxamis.pdf
    • https://cdn.shopify.com/s/files/1/0464/7868/8408/files/modipitin.pdf
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/antivirus_gratis_para_android_samsung_galaxy.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/69306709488.pdf
    • https://cdn.shopify.com/s/files/1/0432/1050/6404/files/vigavaxupolewi.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_off00007a8b.bin
4c916b2f7f78ca4d2430780ba4b8f04d93be4646477395ff447cc3cec3b12940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8B 5244 bytes
font_01_sfnt_off00008c33.bin
3b53dc3ce654e6fcb0be60e1e08b971cdb6eae15a5c2a64bfd876c67bc10e8aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C33 10116 bytes

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