Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc3643b47b83b6ad…

MALICIOUS

PDF

46.4 KB Created: 2020-09-01 13:22:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0599258204aaf2071fc6c5b2618b291b SHA-1: 22e8bc6c049c01293eb0798480da23b8f25d11d7 SHA-256: bc3643b47b83b6adc007449ee2f64b05915b1780587888ba848dba416b9bb9a8
150 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing a malicious redirector link and a mass external PDF link farm. The primary malicious URL, https://ttraff.cc/wix?keyword=what+does+only+incidental+services+reported, is likely used to redirect users to a malicious destination. The document body contains garbled text but also includes the malicious URL and several benign Shopify URLs, suggesting a lure to a malicious site disguised as a document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=what+does+only+incidental+services+reported
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/enciclopedia_britannica_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0438/4168/3618/files/les_articles_dfinis_et_indfinis_partitifs_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/dizepumekeduzajisitovefu.pdf
    • https://cdn.shopify.com/s/files/1/0439/6823/3630/files/nipijag.pdf
    • https://cdn.shopify.com/s/files/1/0437/8286/5058/files/programa_para_abrir_rar_archivos_par.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/jitetafeporojit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lurexemip.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/disulfiram_davis.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/pulawuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/12824402011.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0459/8982/2631/files/list_of_offline_adventure_games_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/74740520620.pdf
    • https://static.usrfiles.com/ugd/5360f8_6ba4a311a9c6495097599e89e3f7e307.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_1a2b8eaf946a4c96af2fe45d253c0186.pdf
    • https://static.usrfiles.com/ugd/ab63e3_9f31528404fd47858015b93d8d71247e.pdf
    • https://static.usrfiles.com/ugd/b8c837_79f7511c81a6460597ceabda20b33dc2.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_off00007676.bin
d92dfe0dca67ce26ad7790e3f47fbdbe000a0c7e355f9b1181d9f864d532bd14
pdf-font-stream PDF embedded font (sfnt) at offset 0x7676 5336 bytes
font_01_sfnt_off000088b0.bin
18feabdc77a9487c4ab188d973361b43a2b4620927c9c075362e238023d9fc31
pdf-font-stream PDF embedded font (sfnt) at offset 0x88B0 10452 bytes