Malicious PDF — malware analysis report

Static analysis result for SHA-256 49c138038990ebeb…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 16:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1b451aa455a435dbcd27f43b41581f9 SHA-1: 86dbd2bff15038d1f91ebba160fb2403ef610574 SHA-256: 49c138038990ebebed4382f352dfdd3f9d384569ebb8d4e8a70e6abb0454d309
150 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and contains a large number of embedded links. One of these links, https://ttraff.ru/pify?keyword=the+buganda+agreement+1900+pdf, points to a known malicious redirector. The document appears to be a link farm designed to distribute malicious content or phish users.

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.ru/pify?keyword=the+buganda+agreement+1900+pdf
    • http://files.srflasvegas.org/uploads/1/3/1/4/131438418/5166391.pdf
    • http://files.transnationaleuropeanstudies.org/uploads/1/3/0/7/130740563/3b5ebea.pdf
    • http://mimef.yuanmodellinggroup.com/uploads/1/3/1/3/131379179/ecd3059712d4c.pdf
    • http://zizag.octobermoon.shop/uploads/1/3/1/8/131871740/zesipirurixixorute.pdf
    • http://files.okasparagus.com/uploads/1/3/2/7/132712315/mogazepodixabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/64939584184.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/ziredulizedopuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/fuwewodilujabo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesuwalaloluxafim.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/big_caslon_font.pdf
    • https://cdn.shopify.com/s/files/1/0433/8515/9843/files/ruromeworegatubogiwulese.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/xitusosul.pdf
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/evidence_of_evolution_lab_answers_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/wufutesogod.pdf
    • https://cdn.shopify.com/s/files/1/0437/7044/5975/files/assembler_deux_mac.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_off000064fe.bin
57b610e49a6fddd19eb7975b0d0277358f3a438cbbb96c864370867f1c741505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FE 5684 bytes
font_01_sfnt_off00007823.bin
f86371768b24b18bdd38ddaad8979f6da6afba43234570b8166f5f22ca6d3bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7823 9908 bytes

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