Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbce47c4e27fd34f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 21:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4108ac85b1f3c5749354fc188a5c9227 SHA-1: d177c0adafdf61543c57786dacde0ba245c612b9 SHA-256: cbce47c4e27fd34ffdb3f5060dcdeda91c997117d428f838c21a7a9bb1006469
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.ru/wb?keyword=etudier%20la%20demonologie%20pdf', is the primary indicator of malicious intent. Additionally, the PDF contains a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The document body itself is heavily obfuscated but contains the same URL, reinforcing the redirection attempt.

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/wb?keyword=etudier%20la%20demonologie%20pdf
    • http://files.alcaeagles.com/uploads/1/3/0/7/130775092/wawag_fumug.pdf
    • https://cdn.shopify.com/s/files/1/0438/8497/0152/files/59972108696.pdf
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/55872871756.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdf
    • https://cdn.shopify.com/s/files/1/0434/1704/3101/files/71781727496.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8659/files/wisupogo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/57704423453.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/tijenapedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/44687579.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bokowolexom.pdf
    • https://cdn.shopify.com/s/files/1/0435/6990/5825/files/gexejozajezexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/nanowakoxobizawemigi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1312/7835/files/82796634670.pdf
    • https://cdn.shopify.com/s/files/1/0431/1629/8393/files/86571208578.pdf
    • https://cdn.shopify.com/s/files/1/0433/1608/4891/files/kisudatakirigas.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/29037816350.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_off0000662d.bin
cf08885ddde31cad96238d898e3c917dbeda5074fbb518ce097343750ab25b05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662D 5140 bytes
font_01_sfnt_off00007793.bin
cab8f237791b73150493cd110088b29c955fef12bae720047513bf76350937bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7793 11708 bytes

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