Malicious PDF — malware analysis report

Static analysis result for SHA-256 4568b7e76572ada1…

MALICIOUS

PDF

40.6 KB Created: 2020-08-21 20:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b15f1fdb8f06511c70b5cf368cece8a7 SHA-1: af904de3d186a7d9e1325916634975d8bedeaf48 SHA-256: 4568b7e76572ada10bd0e232e2717a57d3eb526d801e072b70cb5e99a63a50e8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious domain (ttraff.cc). This indicates a social engineering attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing. The ML classifier also strongly flagged this PDF as malicious.

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=alif+laila+movie+video
    • http://botivuror.sotobiology.com/uploads/1/3/0/7/130739197/132977267f8a.pdf
    • http://files.martialhartamas.com/uploads/1/3/0/8/130814279/6186ec0be38b.pdf
    • http://noxolegut.slaglesfamilyfarm.com/uploads/1/3/1/3/131383613/a8471e7468c3.pdf
    • http://dagoda.alisagrossutti.com/uploads/1/3/1/4/131438416/kunibo_sidim.pdf
    • http://files.galwayplayers.org/uploads/1/3/1/3/131397973/lusunikefojefa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0057/files/gitujomisegodiwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/11502758204.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/wenotepusurulilejunuzez.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/25188533501.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/befelu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/41961520891.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/95656910329.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0296/files/english_proficiency_tests_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/90892840503.pdf
    • https://cdn.shopify.com/s/files/1/0433/8555/3059/files/algebra_with_pizzazz_answer_key_page_42.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b3b.bin
fa909149a64396338a471a4594fae4902a84b14123d51b941086bf6c4073855a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B3B 4828 bytes
font_01_sfnt_off00005ba3.bin
ece12746feb81216450e36ac7b5b4451f6c4ce13ad7a4cadf4b3a2d83ddc194b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA3 9792 bytes
font_02_sfnt_off00007d70.bin
b35f089b4011d1feca5756a231b7510e895d1da88ef0702c253fbbbf4e8f031c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D70 7400 bytes

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