Malicious PDF — malware analysis report

Static analysis result for SHA-256 360760d4f1a6ac7d…

MALICIOUS

PDF

66.7 KB Created: 2020-08-06 03:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8578ec2308546234270eb8a63e92f526 SHA-1: 5ce999ab5f0d27cf594f5b0b66a99a50afb36606 SHA-256: 360760d4f1a6ac7db2ad68f20f520ba473d29eba3b712b69e6def5d358b52fea
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a significant number of external links. One of these links, 'https://ttraff.ru/pify?keyword=center+of+gravity+and+centroid+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL, suggesting the primary intent is to lure users to malicious infrastructure. No scripts were extracted, and the PDF structure itself does not indicate specific exploit techniques beyond the malicious linking.

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=center+of+gravity+and+centroid+pdf
    • http://files.breconcarsales.co.uk/uploads/1/3/0/7/130776484/feweta-lozuz-fozidutux.pdf
    • http://files.independencedayanimalrescue.com/uploads/1/3/0/7/130740210/e1fe4b3.pdf
    • http://files.bughunters.eu/uploads/1/3/2/7/132741194/muwemosavudajaminebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/63599121552.pdf
    • https://cdn.shopify.com/s/files/1/0434/0226/4741/files/4592930582.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/47821465503.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6387/files/sawapis.pdf
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/total_number_of_countries_in_the_world_with_capitals.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevola.pdf
    • https://cdn.shopify.com/s/files/1/0437/9970/7805/files/35770047299.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/fonesigivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4320/0929/files/bafuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/43463031573.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/66249855374.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/built_upon_love.pdf
    • https://cdn.shopify.com/s/files/1/0437/1283/9834/files/kotusimuxozowe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a35f.bin
d8c68462576d141b2c59abe0351c00f5270eeb12176fd751d4ec58401438c5db
pdf-font-stream PDF embedded font (sfnt) at offset 0xA35F 5180 bytes
font_01_sfnt_off0000b522.bin
9d0bf4b044a64bfa78b4c626af65e7741f1110a9a466c858380241377b48f01d
pdf-font-stream PDF embedded font (sfnt) at offset 0xB522 16260 bytes
font_02_sfnt_off0000e83b.bin
b27746ef8f3bf224d06702652216d6f130aacdfbba5ba4c59dcbc7cade7c34e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE83B 16168 bytes