Malicious PDF — malware analysis report

Static analysis result for SHA-256 54155cd82a6a276c…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 05:10:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 330a383e38b26fc5489c5d28b28df113 SHA-1: a16991610602fee3ac1c2b42648ab765c237d692 SHA-256: 54155cd82a6a276c0f32049d0f3d5815f6ab11809d1434a92a4121bcd0dd60e3
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The presence of a link to 'ttraff.cc' suggests a redirection chain designed to obscure the final malicious destination. The document's content, though garbled, appears to reference 'Whatsapp plus', a common lure for social engineering attacks.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=whatsapp+plus+2.+18.+327
    • http://files.crumpetstewkesbury.com/uploads/1/3/1/4/131438541/619409.pdf
    • http://files.waco-review.com/uploads/1/3/0/7/130776483/kemapanamobikipos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/baworiwexuwurejalazaxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/69890882922.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0856/files/que_es_calidad_total_en_una_empresa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/49683397526.pdf
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/gitevobudixirit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/kubovan.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/nixovadulanewekimogojinud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8045/8144/files/zereruni.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/rovobatu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/porakuzabafoxopupak.pdf
    • https://cdn.shopify.com/s/files/1/0434/4283/1522/files/anandpur_sahib_resolution_in_punjabi.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_off00006b16.bin
f6fc568a91e7495090c1e9683a163b10e53e18d41998e5377e3fb4766a8e4c72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B16 5476 bytes
font_01_sfnt_off00007dcc.bin
c0a86e1bf5e4a76bf684fcbd6dff80c17ef31412232e2bd8bcfbe295cad907ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCC 9928 bytes

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