Malicious PDF — malware analysis report

Static analysis result for SHA-256 e640b1c0cd448e61…

MALICIOUS

PDF

39.4 KB Created: 2020-08-18 13:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4baeadd8ea5a3d7ed9cde3783b0db6a6 SHA-1: 8c9204619db14b565069bb5393e0a9297c15ee15 SHA-256: e640b1c0cd448e615b15bb54eda570464ec91f9f24444c61a7a42e94aac277d1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=abbyy+pdf+transformer+3.+0+pro+pl'. This indicates the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution. The document also contains a PDF link farm heuristic, suggesting a broader SEO poisoning or spamming campaign. No scripts were extracted from this sample.

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.com/pify?keyword=abbyy+pdf+transformer+3.+0+pro+pl
    • http://files.alicelynn.com/uploads/1/3/1/1/131164460/9527771.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/21186712285.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/71528007976.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/62539685297.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5142/files/xanel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/cambridge_english_advanced_3_student_s_book_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/3782/4926/files/gabirimoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/67098946379.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/26134253546.pdf
    • https://cdn.shopify.com/s/files/1/0450/5151/0936/files/domabejikomifo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0454/9544/files/ccna_past_exam_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/2614/3639/files/lidelu.pdf
    • https://cdn.shopify.com/s/files/1/0447/1308/3036/files/video_judika_berita_kepada_kawan.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_off000058da.bin
dc3b88676ca0defe403862d0ecb68aeb52b2f3e82e9a5c22ecf6542f608fddae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58DA 5756 bytes
font_01_sfnt_off00006c5f.bin
82bd69cc24c21f9ca7031bea0d604cef028c52dc1d233d7461d80c519fc539e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5F 10700 bytes

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