Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cb1889078bdf60…

MALICIOUS

PDF

35.6 KB Created: 2020-09-10 09:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf74ddc10520c0e36aeeb1f524d54ee2 SHA-1: 0b8fac4e5cead608b3222e7cd1cb71223ef796db SHA-256: d8cb1889078bdf607396a71f59356cd0545e4c3939c7ab3d58fcba11766eb366
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059.003 Windows Command Shell

The PDF contains a large number of embedded links, many of which point to a redirector service. One prominent URL, 'https://ttraff.me/wix?keyword=anonymox+plugin+firefox', is presented as a lure for a browser plugin. Additionally, the document contains instructions that encourage the user to copy and paste content into a command-line interface, suggesting an attempt to trick the user into executing malicious commands. No scripts were extracted, and the document body is heavily obfuscated.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.me/wix?keyword=anonymox+plugin+firefox
    • http://kuzaneve.colinacounseling.org/uploads/1/3/1/6/131637814/kaxurevedexinil.pdf
    • http://files.customjazzycreationz.com/uploads/1/3/0/7/130776445/9429016.pdf
    • http://vujexon.resonancehealing.com/uploads/1/3/1/0/131070450/3358220.pdf
    • http://jadir.fauphtalkfiction.com/uploads/1/3/0/8/130874478/vemovurijub.pdf
    • https://cdn.shopify.com/s/files/1/0431/0102/8503/files/durifinomanun.pdf
    • https://cdn.shopify.com/s/files/1/0435/9559/5938/files/sony_xbr-_x930d_bravia_review.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/free_rental_contract_template_word.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/3051880239.pdf
    • https://cdn.shopify.com/s/files/1/0437/1428/1625/files/aksara_jawa_kuno.pdf
    • https://static.usrfiles.com/ugd/bbd3cf_3bc78f90256c42af9828ee68a8ea0aaa.pdf
    • https://static.usrfiles.com/ugd/565485_e17c005a981643e588fde09ac23b01af.pdf
    • https://static.usrfiles.com/ugd/191a6d_299bdb1b116346ebb8b52db764f45883.pdf
    • https://static.usrfiles.com/ugd/55f640_0b9470c4c0164246a0d3fb5ad8e0244d.pdf
    • https://cdn.shopify.com/s/files/1/0431/7344/5788/files/wekikojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/89689777980.pdf
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/91927830063.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/fuxogeletosokuk.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_off00004f73.bin
e6cf79e477c0f10b77f26d590b39ad3b70d50f92c7308b145e5d53ca3d6b9e88
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F73 4992 bytes
font_01_sfnt_off00006075.bin
f1595b77af87e514f5a1a247bfa331d68c89ed565711895e768ee0b3e707408f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6075 9748 bytes