Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c70b708e432fef4…

MALICIOUS

PDF

37.9 KB Created: 2020-08-16 00:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 613177695af8e44ed88d9ff2c2e23d92 SHA-1: ac0ea6185fd91342e922476e96406a3359d5c44f SHA-256: 1c70b708e432fef4f62cd301ad94d79169b51e7173692dd927b54c1d797ecb1d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=cancion+del+mariachi+piano+sheet+music', is designed to lure users to malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute the malicious content. No scripts were extracted, and the document body is largely unreadable binary data, but the presence of the malicious redirector is the primary indicator of compromise.

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=cancion+del+mariachi+piano+sheet+music
    • http://fover.persicusvet.com/uploads/1/3/0/8/130815017/3a2e02dd9bfe856.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/xawusupozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/53446463789.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/gojidivewomuvitijezutop.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/wojopogatuto.pdf
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/kobopaxexojutugole.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/14391571472.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/53650383169.pdf
    • https://cdn.shopify.com/s/files/1/0439/7809/6798/files/makalah_akuntansi_keuangan_sektor_publik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lugapib.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/78011328395.pdf
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/30262185704.pdf
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/golumogavatizufuzifepu.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_off000052c4.bin
e416f03ecd79a6f7bd54b71d9bba6a4107a874dba0e49fff09c570917f946b5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C4 5220 bytes
font_01_sfnt_off00006448.bin
9df234ac78eae03b21c008e25106414358eaf6ac07d781c5c9f868e5f583c68f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6448 10848 bytes

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