Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e047e10459a33b…

MALICIOUS

PDF

54.2 KB Created: 2020-08-04 07:50:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b562b80616c54afb280a37beda46cb30 SHA-1: 109d3010c6c7ab74fcd1d1db0c6be795ee9e4d68 SHA-256: f0e047e10459a33bdec2527a668dd61d74baa2b4f08fb8bc70e651695bafcc45
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=acretismo+placentario+por+ultrasonido+pdf'. The document body, though heavily obfuscated, appears to contain text related to medical conditions and the wkhtmltopdf tool, suggesting a lure. The presence of numerous embedded links, many hosted on Shopify, further supports a link-farming or redirection strategy. The ML classifier strongly indicates maliciousness.

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=acretismo+placentario+por+ultrasonido+pdf
    • http://files.stalbansrfs.org/uploads/1/3/0/8/130813514/nekonokipunetexel.pdf
    • http://files.broadchalkeparishcouncil.com/uploads/1/3/1/3/131380158/2524d8fcabd6.pdf
    • http://files.faneshafabreart.com/uploads/1/3/1/8/131857120/supenobuvu.pdf
    • http://files.solucionesacabados.com/uploads/1/3/1/4/131483492/7646978.pdf
    • http://files.omega-m.si/uploads/1/3/1/0/131070561/patisokad_zuvulafadaduti_kijufu.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/59205812098.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/debijogevesurumukuzorokef.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/94764577287.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/patarakewijuxasokug.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/42050550547.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/tiruzego.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/kemajiduxoxajavefog.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/mario_party_2_wad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fejatomamegebuwugibuvu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/31189707245.pdf
    • https://cdn.shopify.com/s/files/1/0433/1310/2998/files/86921169053.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/39421043594.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_off0000937c.bin
77e1c36b1a4c97b1dcf469f4db2825931519fc53620af82936f4c0a6a78da50b
pdf-font-stream PDF embedded font (sfnt) at offset 0x937C 5288 bytes
font_01_sfnt_off0000a562.bin
c0422325878dd763abc73cdc02b1628698e7c2605e5b9968fe461fa69be1a500
pdf-font-stream PDF embedded font (sfnt) at offset 0xA562 11032 bytes