Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d94f2bc9fa4cde0…

MALICIOUS

PDF

47.1 KB Created: 2020-07-19 20:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3639579488cdb3d83f4254285a9f7db2 SHA-1: 79a8f6a10f87aa35a4c060fba00aece9f3a706a5 SHA-256: 7d94f2bc9fa4cde043b3814737ca5c65a587bf334173141309585f9cf6bf6747
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Taiwan map pdf download' and a download button. The primary malicious URL identified is ttraff.com, which is used in conjunction with SEO-optimized PDF links to redirect users to potentially harmful content.

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=taiwan+map+pdf+download
    • http://files.marlowpartyplanners.com/uploads/1/3/2/6/132682093/7319d.pdf
    • http://files.oumf.org/uploads/1/3/0/8/130874123/2165143.pdf
    • http://files.rfhrowing.org/uploads/1/3/1/3/131378988/xipusad.pdf
    • http://files.whispersisterstudio.com/uploads/1/3/1/4/131482866/loweromokozejur.pdf
    • http://files.whispersisterstudio.com/uploads/1
    • https://xoxefudisose.files.wordpress.com/2020/07/diwikozewu.pdf
    • https://palutakapa.files.wordpress.com/2020/07/tawiwemuwunokijunupitewo.pdf
    • https://jarojadum.files.wordpress.com/2020/07/tariwifowodesupamab.pdf
    • https://bowiwibaso.files.wordpress.com/2020/07/luradewunejonidajalig.pdf
    • https://fuxopudox126630495.files.wordpress.com/2020/06/wimusovimovolilejapok.pdf
    • https://tizafewika.files.wordpress.com/2020/07/18108391795.pdf
    • https://xenexusese.files.wordpress.com/2020/07/55887706387.pdf
    • https://xojidofaba.files.wordpress.com/2020/06/8952387423.pdf
    • https://cdn.shopify.com/s/files/1/0431/2865/1938/files/93435532977.pdf
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/53222407977.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/47659690711.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78985131446.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/tojetaxivanadebafexubax.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/towujusovafotokevosaziwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/rixisezawaverapajuwa.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_off000074ed.bin
1159d1c2e71d86a20279faa1513f349bed1bcc7f2cdb5077bd39dd39ded95aa7
pdf-font-stream PDF embedded font (sfnt) at offset 0x74ED 4544 bytes
font_01_sfnt_off00008447.bin
fc76c457951e8b1cb7ea30b8e73bee69f6f4c1a7a5e8e5dae8c06d953e7c6bdd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8447 13636 bytes