Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd01d6fa7857e612…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 15:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6482b2603e0d5fbc97ad4fa3ec0322d6 SHA-1: b38e386e73eff2006005d83fcd6e05e2ea68d02c SHA-256: dd01d6fa7857e6129b3306821ed55b2cf631c5863835cc44103f79fad6462634
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. This suggests a link farm or SEO poisoning attack. The primary malicious URL identified is https://ttraff.com/pify?keyword=tableau+de+l+alphabet+phon%25C3%25A9tique+international+pdf, which is flagged as a malicious redirector. The document body itself is largely unreadable due to encoding issues, but the presence of the link farm and the malicious redirector are strong indicators of malicious intent.

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=tableau+de+l+alphabet+phon%25C3%25A9tique+international+pdf
    • http://files.writingarguments.com/uploads/1/3/0/8/130814118/60f4f32be6.pdf
    • http://files.ckfacials.com/uploads/1/3/2/6/132680901/80ba1eda7c.pdf
    • http://dotipo.trailers4u.com/uploads/1/3/0/7/130775997/7920ab52f52d33b.pdf
    • https://cdn.shopify.com/s/files/1/0433/4672/2974/files/62216226105.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/58875609044.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18842325712.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/banking_and_finance_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/videjovefepemagigigefot.pdf
    • https://cdn.shopify.com/s/files/1/0435/8527/4024/files/5911488747.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/pifirumodum.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1630/files/69736548217.pdf
    • https://cdn.shopify.com/s/files/1/0432/2780/7908/files/bamunusewu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/lagna_biodata_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7230/4790/files/99482334281.pdf
    • https://cdn.shopify.com/s/files/1/0434/0324/7781/files/70734869100.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_off00005af3.bin
c64743e3f28941eca12b8e0fa0ef3879d64d69a95e528f8a8dd3afcfc08b5f11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF3 5308 bytes
font_01_sfnt_off00006cac.bin
d7986f83e01ac44f0cd7267e880c27fdad4ea96f15a718ccc29436d7c9f86879		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAC 17436 bytes

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