Malicious PDF — malware analysis report

Static analysis result for SHA-256 91f982500dd8fae3…

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 19:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92180c146860aebebd38052f6381d794 SHA-1: 713fcd72fcea4e19116fbc50d62f71ee9060a91a SHA-256: 91f982500dd8fae363932ddebf94197b62c585bb79e19503721dfe7ed06bb238
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to 'https://ttraff.ru/pify?keyword=all+in+one+periodic+table+pdf'. This indicates a social engineering attempt to lure users to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of numerous Shopify URLs suggests an attempt to blend in with legitimate content.

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=all+in+one+periodic+table+pdf
    • http://files.darilenepomeranians.com/uploads/1/3/2/7/132741334/5150226.pdf
    • http://files.tealiciously.co.uk/uploads/1/3/1/1/131163833/puzidijo.pdf
    • http://files.freedomseminars.net/uploads/1/3/0/7/130775634/48beb7c4.pdf
    • https://cdn.shopify.com/s/files/1/0437/2158/8888/files/gezuwuzunekipibopupezifi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/capteur_de_pression_pizolectrique_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/28597294669.pdf
    • https://cdn.shopify.com/s/files/1/0437/6592/3997/files/49062726858.pdf
    • https://cdn.shopify.com/s/files/1/0439/3933/2251/files/vovixeropije.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/dutopuseripemulak.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/78695122967.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/xulizibipolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6354/9845/files/xewunare.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/79055601907.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.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_off00006f65.bin
9a9a28a932ea0dc32ae48bcd263650abf3125591407e1fb5f3f274c1814d42cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F65 5100 bytes
font_01_sfnt_off000080c8.bin
c7b2ce0bfb7e7e2d34960b5ffdb9b0a4289208c2df1153b7a1dbf4ea91c186aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C8 10088 bytes

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