Malicious PDF — malware analysis report

Static analysis result for SHA-256 41dce739eb277020…

MALICIOUS

PDF

67.1 KB Created: 2020-08-09 07:36:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acc3fd273327a4c0dc2efa0427199b68 SHA-1: 35ad6393ee29a0edcdf915a00a5101ab108722a7 SHA-256: 41dce739eb27702057637397c53c11d464f9db9b634ca2601186c6905c2cf607
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.cc/pify?keyword=medical+symptom+validity+test+pdf' is a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the primary lure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a broad attempt to distribute 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.cc/pify?keyword=medical+symptom+validity+test+pdf
    • http://files.rospacfund.org/uploads/1/3/1/8/131871714/modajoxobi_zudomijitumaxo_vopuxopov_gekivim.pdf
    • http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdf
    • http://files.tlsleadership.com/uploads/1/3/1/6/131607005/jiderepoj-mawuvasuvepewa-xusofebitajunev.pdf
    • http://guxilewi.capturedinpencil.co.uk/uploads/1/3/2/7/132740405/momaf.pdf
    • http://files.northportnhs.com/uploads/1/3/2/6/132682681/podapodarakexagodomi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/cetocort_pomada_bula.pdf
    • https://cdn.shopify.com/s/files/1/0436/7895/7718/files/90449398098.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/gelagoxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3864/5144/files/vidanod.pdf
    • https://cdn.shopify.com/s/files/1/0431/3117/5063/files/nerivutitose.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/10635758228.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/duvunolugaxixipupi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6090/3582/files/zilivadiduwitam.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/40907945289.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1062/files/24426381727.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/5140115369.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_off0000b32e.bin
0b35cb0245f7f4ff71b5d3c71a0269530e9d22c9d573c5544e47662953697ada
pdf-font-stream PDF embedded font (sfnt) at offset 0xB32E 5372 bytes
font_01_sfnt_off0000c586.bin
fffb1d51b230ba01cef270a11d60081edbfbd3aaae92d0e678caf2a39f76c173
pdf-font-stream PDF embedded font (sfnt) at offset 0xC586 10496 bytes
font_02_sfnt_off0000e9a9.bin
aabbb95e4258a1bccfe6759090a0a8b97a33e8154131110566ffb2eaa8fdb080
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A9 16148 bytes