Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fa5974cfe62a77…

MALICIOUS

PDF

40.2 KB Created: 2020-08-10 23:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0473a458c30444432f55bc2c94c18449 SHA-1: 524561d62f8661452d2807e4163bb5ab116ed551 SHA-256: 26fa5974cfe62a77154b01d44e38d34deb438322d35444472220c837c1fc2ef0
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though malformed, contains text referencing a 'Bsc agriculture syllabus 2020 pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious URL is https://ttraff.com/pify?keyword=bsc+agriculture+syllabus+2020+pdf, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bsc+agriculture+syllabus+2020+pdf
    • http://files.franciscoaragon.net/uploads/1/3/1/4/131454620/8337656.pdf
    • http://files.michellejestermain.com/uploads/1/3/1/0/131070604/4e2a62709a99.pdf
    • http://files.jacobxsullivan.com/uploads/1/3/0/8/130873783/1c55c.pdf
    • http://files.graceofcalvary.org/uploads/1/3/1/4/131483138/1150819.pdf
    • http://files.marycarolsullivanportfolio.com/uploads/1/3/1/8/131871658/mijad.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/bevuzimeg.pdf
    • https://cdn.shopify.com/s/files/1/0440/6811/0488/files/37660358687.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/wulitepugaziba.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/43735466919.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/81500619044.pdf
    • https://cdn.shopify.com/s/files/1/0432/2803/7287/files/ajedrez_para_nios_libro.pdf
    • https://cdn.shopify.com/s/files/1/0429/1146/5638/files/gasutikonemafes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/78351644422.pdf
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/english_sentences_for_daily_use.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_off00005c96.bin
136fa668f4c9cc0274345304cd09a2c68491afcfe2f7771c9c80930f9d74a515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C96 5888 bytes
font_01_sfnt_off000070b6.bin
def62d178228021782dde49d7f64192319e82794652dd571481f7d399ecfcb31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B6 10380 bytes

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