Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04ae78ddb91c008…

MALICIOUS

PDF

46.1 KB Created: 2020-09-03 03:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 795e748c19b6631a69a32064344df93a SHA-1: d7b72a9f020586667b243d04372e19feb138e215 SHA-256: f04ae78ddb91c008f71271c929a2c69ae918ff0d72c0e4b34404b8ab4f0662e4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=lullaby+of+birdland+pdf+bb'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0435/3612/2008/files/ditizinimezuvewejomilewu.pdf'. The document body, though heavily obfuscated, contains references to these URLs and the title 'lullaby of birdland pdf bb', suggesting a lure to a malicious site.

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/wix?keyword=lullaby+of+birdland+pdf+bb
    • https://cdn.shopify.com/s/files/1/0435/3612/2008/files/ditizinimezuvewejomilewu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/biwisojakudukezawas.pdf
    • https://cdn.shopify.com/s/files/1/0463/2798/8385/files/68358489095.pdf
    • https://static.usrfiles.com/ugd/fa6f14_ece9f4f60a6a4189a913cdb46726a201.pdf
    • https://static.usrfiles.com/ugd/0dd040_6adcc7909afe4d01a4eebcfd2643377c.pdf
    • https://static.usrfiles.com/ugd/724bd4_1a4ff4b3000343eb889a3741a8a54fc3.pdf
    • https://static.usrfiles.com/ugd/49488e_a03ac79f105c463082c1af047536d6b7.pdf
    • https://static.usrfiles.com/ugd/ce5d00_ddfaad112b024325ac7b8eb3cd23d28d.pdf
    • https://static.usrfiles.com/ugd/93c935_fb3146c02c3742fb88f3494725a7adc4.pdf
    • https://static.usrfiles.com/ugd/b6aaa0_4e4e83fcdd13477e96686803b7e167d4.pdf
    • https://static.usrfiles.com/ugd/6cf392_ae14a913c19f45c8a8dac3b664caaf93.pdf
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/32578622173.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7975/files/6046262326.pdf
    • https://cdn.shopify.com/s/files/1/0438/1274/9469/files/65198731630.pdf
    • https://cdn.shopify.com/s/files/1/0428/9137/8854/files/81723646313.pdf
    • https://cdn.shopify.com/s/files/1/0437/8837/0072/files/lufaderog.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_off000063b3.bin
37cf4f4f0b501c324454bf07fc7c7167144b3dcc8b3e9d96c83055dd9580ae59
pdf-font-stream PDF embedded font (sfnt) at offset 0x63B3 5288 bytes
font_01_sfnt_off000075c2.bin
da723c97c5fc96c20a08c662eea424de7f5a0431dff0bf8ca7bb964aeb1294e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C2 5040 bytes
font_02_sfnt_off00008701.bin
6c997d9925dcb9de14c475d469598f57b08e5681fab0354fd062da2e7986ea12
pdf-font-stream PDF embedded font (sfnt) at offset 0x8701 10136 bytes