Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed393f1139271d3d…

MALICIOUS

PDF

39.1 KB Created: 2020-09-07 11:08:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d98b0caf2829ae7d5aebcaba475ed64 SHA-1: 8724b5574537bbb65a013899d1efd93a6723a0ab SHA-256: ed393f1139271d3d51e617d0180e6537f55eb48400cff3ccb616b908706a64ff
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is part of a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the idea that the document is designed to trick the user into clicking the malicious link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=crazy+penguin+catapult+apk
    • https://static.usrfiles.com/ugd/7ff653_88bc1f361573486ca64b7e40607fc676.pdf
    • https://static.usrfiles.com/ugd/a18aa6_55786a8aea294443b2416bb93c4070a2.pdf
    • https://static.usrfiles.com/ugd/68ec51_1d291e18ba01491bb9bf788c5827d5de.pdf
    • https://static.usrfiles.com/ugd/5de1df_e1731579518f44ada53c74b6538ff803.pdf
    • https://static.usrfiles.com/ugd/cfa91a_e63719a933b94167a1f4a2643ad82cb9.pdf
    • https://static.usrfiles.com/ugd/e3325f_1dd38c16242e4513925377ca0207ac43.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/billie_s_bounce_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/vurofasediv.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/percentile_to_z_score.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53295895336.pdf
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/cibil_and_bgv_consent_form.pdf
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/gobuwezodewuvibibesajigo.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_off00005a42.bin
c47cfa0931bdafd3ca643a34b1f1f8942acde4e0b95d93b7fe74149ee269409b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A42 5044 bytes
font_01_sfnt_off00006b96.bin
5a95f85e7b442495611b9d1063ad90caab59f717215de025cdea84d99ee92e8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B96 10480 bytes

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