Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed7cebb0c14b4e5…

MALICIOUS

PDF

48.7 KB Created: 2020-09-05 05:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fc829deb5aba439058c7f42f2490f05 SHA-1: f090808ea697f3d0a5560520fd65d70d96575c5d SHA-256: bed7cebb0c14b4e54e058d3a46384430f6a4f364a05ae63573f70fbf8ccc5ca4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=bixolon+srp-+350plusiii+manual'. This URL is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of numerous benign Shopify links suggests an attempt to blend in with legitimate content.

Heuristics 3

  • 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.
  • 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=bixolon+srp-+350plusiii+manual
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/contoh_laporan_amdal_rumah_sakit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdf
    • https://cdn.shopify.com/s/files/1/0439/4981/8024/files/diego_ojeda_mi_chica_revolucionaria.pdf
    • https://cdn.shopify.com/s/files/1/0435/9405/5843/files/15496374349.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/tubuxisitelusudibudutido.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/duzusedurodimijupen.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8832/files/kepijopedojibidotagat.pdf
    • https://cdn.shopify.com/s/files/1/0432/0883/5236/files/81355791851.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/nokopamugepakavegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/allegory_of_the_cave.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/free_personal_budget_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0439/5712/5278/files/26867004033.pdf
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/72552724752.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/
    • https://cdn.shopify.com/s/files/1/0435/9405/5843/files/15496

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000660b.bin
75e01192eadebb7fc5eb13bcbc240ec828d31a0c3f31bb7faf75d760bcfd85a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660B 5228 bytes
font_01_sfnt_off000077ac.bin
0bf1a6ab0d4ff50c896260801f983170d1f9c7bfcc10a2afdb591520bb65db65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AC 15344 bytes
font_02_sfnt_off0000a7c0.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C0 4324 bytes

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