Malicious PDF — malware analysis report

Static analysis result for SHA-256 823db4eaece9ecfc…

MALICIOUS

PDF

36.1 KB Created: 2020-08-29 02:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 571694e8c7d45e74f3c7db64a0aca159 SHA-1: 0f9421be2df3407d12b929f8ac848d89c916aa7c SHA-256: 823db4eaece9ecfcddbec31f34a573f677a7eb6c942eb3072779014d07d83a62
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wix?keyword=abre+tu+tienda+al+se%25C3%25B1or`. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious sites. The document also contains a large number of external links, characteristic of a link farm, further supporting a malicious intent to distribute harmful content or engage in SEO manipulation for malicious purposes. No scripts were extracted, but the presence of the malicious redirector is a strong indicator of a phishing or redirection attack.

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=abre+tu+tienda+al+se%25C3%25B1or
    • https://static.usrfiles.com/ugd/b8c837_be85e698856c4ec69b958fe88fd33715.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a52d105a9fb4055ab7ab6417f14f8a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d063b16b638444591983e4b14169fff.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8c4c6b8ac9e40a89c928cd2f02856af.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6513caed15544eba0daf023de20d427.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/ardas_sahib_in_punjabi.pdf
    • https://cdn.shopify.com/s/files/1/0447/6734/6839/files/enciclopedia_de_aperturas_de_ajedrez_sahovski_informator.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/bufoguxitipozokizo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/bodybuilder_workout_chart.pdf
    • https://cdn.shopify.com/s/files/1/0437/7300/1877/files/jijirikegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/baseball_field_positions_template.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_off00004c51.bin
2acbec14a155217020c8079bbde1281b8b4b7a8bd14692bd1337129eb893bb06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C51 5160 bytes
font_01_sfnt_off00005d98.bin
0249875e86cc95c86ddc70f22d525122f9e6e5ca00c86c4a741b4b98a8376aa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D98 11496 bytes

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