Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbbd62c7028cd8e…

MALICIOUS

PDF

40.0 KB Created: 2020-08-17 04:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 454fc0010dc697780f0b67b3090ae258 SHA-1: ef4c89b90920116a36825a4df6f6e3075ec99a29 SHA-256: 1fbbd62c7028cd8ef7c615f4fbbc2ac66445258d8e218aafcb7b6ced314f64d9
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, including a critical link to a known malicious redirector at `https://ttraff.ru/pify?keyword=wedding+invitations+templates+editable`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted from this sample.

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=wedding+invitations+templates+editable
    • http://files.allsaveenergy.com/uploads/1/3/0/9/130969545/615a41cea190d9.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/ruzotamisebakumukap.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/7056583161.pdf
    • https://cdn.shopify.com/s/files/1/0437/1172/5723/files/wemaja.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8970/files/robematumixesopo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/zatujitawe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24803542318.pdf
    • https://cdn.shopify.com/s/files/1/0435/8373/3921/files/32_bit_and_64_bit_operating_system.pdf
    • https://cdn.shopify.com/s/files/1/0430/4135/7973/files/exploring_biological_anthropology_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/9094/2888/files/teflon_don_zip.pdf
    • https://cdn.shopify.com/s/files/1/0439/2402/9608/files/kevadanivazaxuremupeza.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_off00005f8d.bin
c858f62634e4d54182f4be3bbb2a9ffbe122748b5de743c3a9423d16b1bca764		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8D 5396 bytes
font_01_sfnt_off000071e3.bin
d7e9f6eeaaebed31a51a7c3c5be132cc3cc498ec3a77d38b0aaeffd2503d73cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E3 9788 bytes

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