Malicious PDF — malware analysis report

Static analysis result for SHA-256 914d5abd1aaae44a…

MALICIOUS

PDF

41.1 KB Created: 2020-08-15 08:39:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46acd8b5b1c72a9bf9b1d042c83ce057 SHA-1: 737eb9f3687f1962ad9f6a5aa3044bf2e0d9f395 SHA-256: 914d5abd1aaae44ae222902337a69f2bfaad08c17abe325493d8fd92b5f0f72b
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to malicious infrastructure. The primary malicious link, https://ttraff.cc/pify?keyword=sheets+for+bedridden+patients, is a redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering attempt to drive traffic to malicious sites.

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=sheets+for+bedridden+patients
    • http://jupimagu.lopezanimals.org/uploads/1/3/2/6/132695569/xawipa.pdf
    • http://files.ency-education.com/uploads/1/3/1/8/131857445/a6a129f9a90813.pdf
    • http://jararife.buryacapeelers.co.uk/uploads/1/3/0/8/130874049/jadaxu_semojax_nigawi_kefuti.pdf
    • http://files.heroesofcolor.com/uploads/1/3/1/3/131380063/5359549.pdf
    • http://lofunudo.sacredsummitchocolate.com/uploads/1/3/2/8/132814930/gorivezorokid.pdf
    • https://cdn.shopify.com/s/files/1/0428/8223/6572/files/kudave.pdf
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/31582593136.pdf
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/65158978508.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/wulotelewijiratadatulegis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/alkaline_herbal_medicine_aqiyl_aniys.pdf
    • https://cdn.shopify.com/s/files/1/0448/9238/9531/files/58239090690.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/43050928794.pdf
    • https://cdn.shopify.com/s/files/1/0432/1578/2048/files/swing_trading_with_options.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15843942414.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_off000060cc.bin
c24d4573fde786f2622d00d8b58c8aa3025e3b6c2a94d820e79506a787ba43c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x60CC 5340 bytes
font_01_sfnt_off000072e4.bin
f4be4188353cbadc16702167c091120b3099380adc1c1276821417dc5e2fcb88
pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 10800 bytes