Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea58f9c67201a39…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 12:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 051d4526595dc47cdb0f01290fc61974 SHA-1: 9537aa5641782cd85c848becc8a78b1946175a78 SHA-256: fea58f9c67201a393aacbe4d6d7ce86b91592d6e20f13ae6775aadf65a37dabf
150 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a link farm of 15 external PDF links. One of these links, 'https://ttraff.com/pify?keyword=jelly+sheet+mask+collagen', points to known malicious redirector infrastructure. The document body contains garbled text and a reference to the malicious URL, suggesting a lure to a malicious site.

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=jelly+sheet+mask+collagen
    • http://files.multiplatformmastermind.com/uploads/1/3/1/3/131383283/mafisezepisegu.pdf
    • http://gafebabu.mojovolleyball.com/uploads/1/3/0/7/130739430/tageduwaxib-mapili.pdf
    • http://files.fgiii.net/uploads/1/3/2/7/132712233/1222144.pdf
    • http://files.spotlightlima.com/uploads/1/3/2/6/132681579/zuvogebavixiw-gesoriraxabupe-kixale-xuwubesef.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/annihilation_of_caste_pdf_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8237/4561/files/22959081159.pdf
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/kemilojepujuwemiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/rs3_woodcutting_guide_f2p.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/educational_psychology_nagarajan_book_in_tamil_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/98296135554.pdf
    • https://cdn.shopify.com/s/files/1/0434/8667/5108/files/poxuzub.pdf
    • https://cdn.shopify.com/s/files/1/0438/7025/7320/files/business_management_and_administration_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4815/files/rirunujalenumul.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdf
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/modoo_marbel_online.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_off0000509c.bin
839d9008709da85dba2ec9d3567df8715e6d216a9ae91a62eca9e1b807ad669b
pdf-font-stream PDF embedded font (sfnt) at offset 0x509C 5272 bytes
font_01_sfnt_off0000626e.bin
421ba3ed9d4371342716894474fa25f638119eed085827e28197c475d925c312
pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 10152 bytes
font_02_sfnt_off0000856d.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0x856D 16164 bytes