Malicious PDF — malware analysis report

Static analysis result for SHA-256 5810e1e3ac8ccfb2…

MALICIOUS

PDF

37.9 KB Created: 2020-08-24 07:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dd8fa27fe3cebdc19bab8bb9ba282ca SHA-1: 4703df36d6d08152919b080bb7f0c9485ecad52d SHA-256: 5810e1e3ac8ccfb21f0c40e5c7a39ea851933e5a9a14c5c67a8e79978406c509
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous links to other PDFs, predominantly hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and references to other PDF files, reinforcing the redirection and link farm attack pattern. No scripts were extracted from this sample.

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=aashiqui+2+mashup+ringtone++pagalworld
    • http://files.oakahmochafarms.com/uploads/1/3/1/8/131856365/warebugud.pdf
    • http://raxew.jessicagarrigan.com/uploads/1/3/0/7/130739540/45cc07537.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/meaning_of_contract.pdf
    • https://cdn.shopify.com/s/files/1/0430/3434/5625/files/atoms_and_molecules_notes.pdf
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/41936036908.pdf
    • https://cdn.shopify.com/s/files/1/0457/8983/9516/files/mijbil_the_otter_class_10_question_answer.pdf
    • https://cdn.shopify.com/s/files/1/0440/7879/2869/files/neruburega.pdf
    • https://cdn.shopify.com/s/files/1/0440/7223/9269/files/xavekadasijip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/vevuxipuwugote.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/barcelona_walking_tour_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/va_laisse_couler_mes_larmes.pdf
    • https://cdn.shopify.com/s/files/1/0439/9028/6494/files/javepubapibas.pdf
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/biwufut.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_off00005052.bin
dd3038b0bbe66b8b1e9364bc02d0e200ff634aa17250f0e235cd88f448b1d9db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5052 5712 bytes
font_01_sfnt_off0000639f.bin
dbd43c1fbd1cbb1c2594018b8b76460e8d370a080a0dfe4cc4323c32fe91e149		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639F 12268 bytes

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