Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0073f936a656501…

MALICIOUS

PDF

38.1 KB Created: 2020-08-05 07:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a18879652d03bf1b53a2ae776587351d SHA-1: f22f87f8825bba8d6c625ab9c3bac99adf496b05 SHA-256: e0073f936a656501d6cf427bfcae1cb56571f6ec84b8e477f58ca115bd321d4f
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, specifically `https://ttraff.cc/pify?keyword=pan+card+affidavit+format+pdf`. This link is presented within the document body, disguised as a legitimate document. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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=pan+card+affidavit+format+pdf
    • http://files.flutterbybirth.com/uploads/1/3/1/4/131409017/9dc04.pdf
    • http://niraper.with-piper.com/uploads/1/3/1/4/131438464/tukugo_ruduravi_puxutopef.pdf
    • http://files.debcoopertextileart.com/uploads/1/3/0/7/130775413/jilewejejifokugaxiri.pdf
    • http://files.pinchersandpokies.com/uploads/1/3/2/7/132740435/rozen.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1707/files/nimojoposubosupevozenud.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/john_legend_stay_with_you.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/76183620623.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/1445463048.pdf
    • https://cdn.shopify.com/s/files/1/0430/5420/3031/files/flywheel_energy_storage.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/bsc_3rd_year_chemistry_notes_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/stevens_320_12_gauge.pdf
    • https://cdn.shopify.com/s/files/1/0435/8127/6319/files/5th_wave_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5448/7969/files/engineering_economy_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/poponoxuzewokeras.pdf
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/85987010542.pdf
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/lazigolebu.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_off0000585b.bin
aa0442da7b48d297c697932885e6a4e156fc54064b35b7a6fb7d478a5e348cf8
pdf-font-stream PDF embedded font (sfnt) at offset 0x585B 5152 bytes
font_01_sfnt_off000069da.bin
90ba4500f70fa5bb3c5bc78250595111d2400f19730800d310ffebf0fb75cc40
pdf-font-stream PDF embedded font (sfnt) at offset 0x69DA 9992 bytes