Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae8bf36ebf6d127b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-21 18:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51d5311e3d1f590aecc7cf13a4e6f39b SHA-1: ef046764711af8cf2b6b44fcedb039d9d95bb5c6 SHA-256: ae8bf36ebf6d127be94ac985092f4e6dd4425a27a1336824ed4949f8c096c07c
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a link farm and a redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=peter+answers+virtual+tarot+%25D0%25BD%25D0%25B0+%25D1%2580%25D1%2583%25D1%2581%25D1%2581%25D0%25BA%25D0%25BE%25D0%25BC, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended lure. The presence of numerous other PDF links, many hosted on Shopify, points towards an SEO-based spam campaign.

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=peter+answers+virtual+tarot+%25D0%25BD%25D0%25B0+%25D1%2580%25D1%2583%25D1%2581%25D1%2581%25D0%25BA%25D0%25BE%25D0%25BC
    • http://files.littlesilverems.org/uploads/1/3/1/3/131382982/xelitimuzife.pdf
    • http://butagunax.soulwavesunlimited.com/uploads/1/3/0/9/130969559/lolefaf_rimagobumesu.pdf
    • http://files.dnaleatherwa.com/uploads/1/3/0/7/130738814/8327209.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/gepudibiralezaxijafedede.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/suguxofufuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/teweregimojinakuboruvo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/cinderella_man_summary.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/xujiwutowidemo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7614/1731/files/fodonesusizemuba.pdf
    • https://cdn.shopify.com/s/files/1/0432/7545/2569/files/hebrew_alphabet_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/56471576544.pdf
    • https://cdn.shopify.com/s/files/1/0435/4329/8207/files/8836342146.pdf
    • https://cdn.shopify.com/s/files/1/0433/7002/1014/files/ferozuzutabubotunawajit.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_off00004929.bin
a31095ea8a4b10fbf47b26d2873005c066c56d16d2c5600976d79d48a8f95076
pdf-font-stream PDF embedded font (sfnt) at offset 0x4929 5616 bytes
font_01_sfnt_off00005b7a.bin
6be80895cd74d41777e700d0b6b34066cd331797edd3c6ee05620365bb06f4d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7A 12936 bytes
font_02_sfnt_off0000848e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x848E 4324 bytes