Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb58876eae85604a…

MALICIOUS

PDF

48.0 KB Created: 2020-08-05 23:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 709fcf44103b16d55e160dda604c5ec8 SHA-1: a8f4a0c6ac7d875a8830d06e7a68b2a12f46d2b6 SHA-256: fb58876eae85604a21699909e8b968e2e77cd5a1a6d70da17977a66b23f20528
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector (ttraff.cc). This redirector is likely used to obscure the final destination, which could be a phishing page or a malware download. The presence of a "download button" lure further supports this malicious intent. The document body itself is heavily obfuscated and contains the malicious redirector URL, indicating it's part of the lure.

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.cc/pify?keyword=document+management+system+thesis+pdf
    • http://files.libertymerchandise.org/uploads/1/3/0/7/130776511/ganejotaxijuzadem.pdf
    • http://files.cinderellaclean.ca/uploads/1/3/2/7/132710794/nemovize.pdf
    • http://files.btbrv.com/uploads/1/3/1/8/131871642/nakibexaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/57579522660.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/69308560623.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/88309384406.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/magic_chef_ice_maker_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/limibamiwuji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/pibefobinetufapif.pdf
    • https://cdn.shopify.com/s/files/1/0440/4844/9701/files/authentic_leadership_development.pdf
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/41046898531.pdf
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/wastewater_treatment_plant_design_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27055139941.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_off00006feb.bin
14520fe51293de1fe22814471e208a5423440975515b82e0a1e3fc4a0093fd1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 5424 bytes
font_01_sfnt_off00008240.bin
87e72294f041e2ee64fd3997c0597ad397ba3a2fc9d4f83f24825db03ef561a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8240 10252 bytes
font_02_sfnt_off0000a4fa.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4FA 4324 bytes