Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6eddd82cc1374c…

MALICIOUS

PDF

44.1 KB Created: 2020-08-11 18:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71d007e7c2ea5a0665e691b9b402f7f2 SHA-1: 49276e1947dc0a0d4daf241d4015ba6e8bba648f SHA-256: 7c6eddd82cc1374c6f9eba106815f6a692b32224a8defacc494f6ee7cf623c6c
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to its inclusion of numerous embedded links. One critical heuristic indicates a PDF link to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=diet+plan+for+bodybuilding+beginners+pdf'. Another heuristic flagged it as a PDF SEO link farm, with many links pointing to Shopify-hosted PDFs. The document body, though partially corrupted, also contains the same redirector URL and references to 'diet plan for bodybuilding beginners pdf', suggesting a lure to entice users to click malicious links.

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.com/pify?keyword=diet+plan+for+bodybuilding+beginners+pdf
    • http://files.hermanworks.com/uploads/1/3/1/4/131407148/farobamobabum_mifotedopa.pdf
    • http://files.ddssullivan.com/uploads/1/3/1/4/131453194/a92c650cf78924.pdf
    • http://files.empoweredwellness.org/uploads/1/3/1/4/131438814/7144139.pdf
    • http://botadoru.demonjardin.com/uploads/1/3/0/7/130738732/7319515.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/zirukijaxawivato.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/candlestick_continuation_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0439/7232/9630/files/php_zip_code_validation.pdf
    • https://cdn.shopify.com/s/files/1/0437/5927/2090/files/sobinasogidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/movefipuzagupu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/56439031821.pdf
    • https://cdn.shopify.com/s/files/1/0431/3645/0717/files/naruto_shippuuden_episode_77.pdf
    • https://cdn.shopify.com/s/files/1/0438/0393/4877/files/vibufofiweza.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/favirifejekodironufadafak.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/abstract_nouns_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/witinaleroxelu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/72556339893.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_off00006d9d.bin
99c896660610ab68e010d938d299f154cc29cdef5aad0892437692d713e48f84
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9D 5452 bytes
font_01_sfnt_off00008031.bin
0790164c232e9d85adca6d44f78158cdc51ab620803f9a82f6eb0854f1f3c565
pdf-font-stream PDF embedded font (sfnt) at offset 0x8031 10304 bytes