Malicious PDF — malware analysis report

Static analysis result for SHA-256 f743efbc60111b33…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 19:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b36a1a7aabeee0988ec19bed7ad5f1c SHA-1: 7e4dc04375e462fc03374d1f6a2a29be7f26079d SHA-256: f743efbc60111b338c67d7e2f26c400343d4cb6120b6d4394e2ae6deab752be3
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a string that appears to be a search query for 'children's birthday party songs free' followed by the malicious URL. This suggests a social engineering lure to trick users into clicking the link, which then redirects to potentially harmful 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.cc/pify?keyword=children%2527+s+birthday+party+songs+free
    • http://mozeva.whslionswrestling.com/uploads/1/3/0/7/130738909/59e955fa.pdf
    • http://files.marielarraineweir.com/uploads/1/3/0/7/130740589/7826235.pdf
    • http://gumaxafe.designhur.com/uploads/1/3/2/3/132303374/7982860.pdf
    • http://files.neworleanspastlives.com/uploads/1/3/0/7/130775370/7b354170ee1e162.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/wordly_wise_book_8_lesson_9_answers.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/bixujonudakapibopirule.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/kalirutufamisavanival.pdf
    • https://cdn.shopify.com/s/files/1/0433/0802/3966/files/self_defence_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0429/1205/5463/files/97750029068.pdf
    • https://cdn.shopify.com/s/files/1/0433/8666/7158/files/rabubelawafo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/35695834193.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/tuvot.pdf
    • https://cdn.shopify.com/s/files/1/0432/8108/8670/files/sociology_1st_year_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/25649950277.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_off000072df.bin
2de752e6789b93730ee3a207b7a4d53066dd9493c4947773254702359a3f31d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DF 5484 bytes
font_01_sfnt_off0000857c.bin
3f80b63c1bbb38c7a79d0a4f76724bad3a795005d9fc5c4ebd983f6d2e645910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x857C 10440 bytes

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