Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3cae0bb1ca442c…

MALICIOUS

PDF

38.8 KB Created: 2020-08-27 17:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 053d95c7ddaa8aaf8be2576bfa8896ec SHA-1: 097f94e9a357761d2f110e12e92d2b8bd52ec011 SHA-256: 1e3cae0bb1ca442c1d99445124570133ea397dcfcb336e0d9a4393e4f6ef1b8a
128 Risk Score

Malware Insights

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

The PDF file contains a prominent link that, when clicked, redirects to a malicious URL. This URL is part of a link farm designed to lure users with popular search terms like 'Yeh rishta kya kehlata hai ringtone free download'. The presence of a visual download button further supports the social engineering aspect of this attack. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=yeh+rishta+kya+kehlata+hai+ringtone+free+download
    • http://tawano.freechristianebooks.org/uploads/1/3/2/8/132816202/890d213dbaeb34.pdf
    • http://files.juliaandjustjulia.co/uploads/1/3/0/7/130775126/bewabeb.pdf
    • http://files.chslibrary.info/uploads/1/3/2/6/132683357/461948.pdf
    • https://cdn.shopify.com/s/files/1/0437/2499/6758/files/wapuligowavekeluxuge.pdf
    • https://cdn.shopify.com/s/files/1/0433/9551/4535/files/behindertenausweis_antrag_berlin.pdf
    • https://cdn.shopify.com/s/files/1/0458/6235/5097/files/rigenilifagoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/ted_bundy_movie_netflix_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/vijunax.pdf
    • https://cdn.shopify.com/s/files/1/0430/3778/6266/files/lavodedojigopejatumat.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/tekakox.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/27366104964.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/comment_relier_plusieurs_ensemble.pdf
    • https://cdn.shopify.com/s/files/1/0434/1989/3927/files/sql_server_commands_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4865/files/calendario_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0461/9580/2261/files/poor_wifi_signal_strength_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/19373504085.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_off00004e16.bin
4948718b388f43f652c9d3c201c69f7c1e45cee4d68c2296646d6c8f3e6a3625
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E16 5388 bytes
font_01_sfnt_off00006077.bin
d948aec757a49c4f3ad45f26cbde5cfe1504f29e808b720f39f397b4a3deb86b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6077 14120 bytes