Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f20c6cd0eca577…

MALICIOUS

PDF

49.7 KB Created: 2020-08-10 13:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bd2aa56d981434ef495b1c550a73c6a SHA-1: 411e55f6cfabbb743eb36dbf3927e2a5d629f4f6 SHA-256: 34f20c6cd0eca577b9b8a0de7c692967a9ffbf694ae927535c756be688cf615c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the redirection. This suggests a phishing or malicious content delivery attempt. No scripts were extracted, limiting the analysis of further execution chains.

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.ru/pify?keyword=kadambari+marathi+pdf
    • http://files.raleighgroomingacademy.com/uploads/1/3/0/8/130814169/fizuta.pdf
    • http://files.doudorchard.com/uploads/1/3/2/6/132695694/bofibedekufixat.pdf
    • http://sinarejej.companionanimalmemorials.ca/uploads/1/3/0/7/130739835/fuwefilubesa.pdf
    • http://files.elbersauction.com/uploads/1/3/2/3/132302732/8866739.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/masuleguxexufem.pdf
    • https://cdn.shopify.com/s/files/1/0430/5240/0789/files/libros_esther_hicks.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/41408653695.pdf
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/tuzajatisifuloresadipijix.pdf
    • http://files.szhao.people.ua.edu/uploads/1/3/2/3/132302764/7633780.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/48373598211.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8764/files/raparimeximanetewobarokof.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/23514784727.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/kumemiturub.pdf
    • https://cdn.shopify.com/s/files/1/0447/0964/2394/files/tamil_nadu_map_with_temples.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/mexutevuzamoxujip.pdf
    • https://cdn.shopify.com/s/files/1/0437/8044/0215/files/networking_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/0147/8311/files/tizalilugarimebin.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_off00008577.bin
0e0d18ba266356e97716c544a78b68456646a1515c1f9b40287391467ded4344		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8577 5180 bytes
font_01_sfnt_off000096f6.bin
f0e319d7b6dccbf791e7f04afeb502c5df3a712fcdc847cb062873fd75223c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F6 10252 bytes

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