Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ccbc986ef2a0d1b…

MALICIOUS

PDF

51.3 KB Created: 2020-08-04 09:24:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40f9f3f7b8bebf6a2e4cec77c25a1d96 SHA-1: 4aa5e239cc53fe9af8c01e7e19fc6ca74fc4065f SHA-256: 8ccbc986ef2a0d1baeb7168f269779f9980e35b63ab937321c108ffd903d22f8
120 Risk Score

Malware Insights

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

This PDF document was identified as malicious due to the presence of a critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing, indicating a link to known malicious infrastructure. Additionally, a PDF_SEO_LINK_FARM heuristic fired, revealing a mass of external PDF links within the document. The primary malicious IOC is the redirector URL https://ttraff.cc/pify?keyword=blossoms+of+the+savannah+themes+pdf, which likely serves as the initial point of compromise. The document body, though heavily obfuscated, contains references to the same redirector URL, reinforcing its malicious intent.

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=blossoms+of+the+savannah+themes+pdf
    • http://files.jlbfitness.ca/uploads/1/3/1/3/131384573/sumag.pdf
    • http://files.frcsiouxfalls.com/uploads/1/3/0/7/130740493/zutoni-fopiwuwusen-fuzixopu-givojexilufo.pdf
    • http://files.brennathompsonrd.com/uploads/1/3/0/7/130775868/19742053.pdf
    • http://vijipalog.franciscanministryofpeace.com/uploads/1/3/1/8/131857334/6467259.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/96769666827.pdf
    • https://cdn.shopify.com/s/files/1/0434/6216/4644/files/90542607908.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/73871551150.pdf
    • https://cdn.shopify.com/s/files/1/0431/2789/8268/files/60048838520.pdf
    • https://cdn.shopify.com/s/files/1/0432/4196/3683/files/6831557291.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/kujaresedex.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7358/files/27332632607.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/sowapavebutuvizegulasom.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/69389839207.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1401/files/jimonetafalogupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7711/files/nesojojaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6026/files/wuwew.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/brahma_purana_english.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_off00008bf8.bin
1d2a33f3c60719e1758fe0c1b73f1ff37ea7e7a5a94af0c4c6f4bbb64be2d3a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF8 5292 bytes
font_01_sfnt_off00009de0.bin
1e6bad54b1491e895bdb4a5dc78da26c7d958c7b67688cb37ba5742e033b7404
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE0 9956 bytes