Malicious PDF — malware analysis report

Static analysis result for SHA-256 b425d818dfa5bf0c…

MALICIOUS

PDF

37.5 KB Created: 2020-08-10 03:18:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e603d9f99dcf00a98caa431c0c4a1e8 SHA-1: 3af6ce17d0c64cd76e3b800e7e3f28b78fdcfd91 SHA-256: b425d818dfa5bf0cb9198e2523f5ac3fa7f9997165c80c7714d0c704fce653ae
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.com/pify?keyword=tinkle+origins+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to external content. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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=tinkle+origins+pdf
    • http://sarovofod.gracedruggeart.com/uploads/1/3/0/7/130776485/e7402.pdf
    • http://files.maithainc.com/uploads/1/3/1/3/131379034/dawakoxun-datotalukozatov-tufogote-bibilaraneva.pdf
    • http://files.beblessedwellness.com/uploads/1/3/1/3/131398555/8bd5c.pdf
    • http://files.kate-allison.com/uploads/1/3/0/7/130776267/gibegilo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/kowar.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/topojson_command_line.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/calculus_for_iit_jee_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/sejigo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2459/6642/files/41175347537.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/62209140777.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/zonodanezuzosip.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/7606055009.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9041/files/femexuvukusujo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8412/files/23293759795.pdf
    • https://cdn.shopify.com/s/files/1/0434/0108/5082/files/vigogilazetupigogolamarox.pdf
    • https://cdn.shopify.com/s/files/1/0438/7287/8747/files/pexagigapo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9679/files/nivutenerijejurije.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_off000048c3.bin
47feda80fb6ba9843e98a7e5aace967c7b396a1eef5906e8de5bc3d8468e2c07
pdf-font-stream PDF embedded font (sfnt) at offset 0x48C3 5012 bytes
font_01_sfnt_off000059e9.bin
668b4cdef04fa4f9b22c0ccad91c70e6f3cfe98cac2c78ebfd7d9671e72bdf46
pdf-font-stream PDF embedded font (sfnt) at offset 0x59E9 2984 bytes
font_02_sfnt_off000065e5.bin
00e54bc1d693e69b4ec8f262da56a15d9105353dde5145c8103ec6d43601002e
pdf-font-stream PDF embedded font (sfnt) at offset 0x65E5 9864 bytes