Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52cfca1bec8f2ff…

MALICIOUS

PDF

43.8 KB Created: 2020-08-24 04:10:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f9d7f1419c49f8f7b476064fb56fa68 SHA-1: 81db80667594a5c098a36df5de6f8d131c6c9487 SHA-256: b52cfca1bec8f2ffddd951efff4848e63012880b2b3229bc47c0fcc0ae65eb23
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=carbonation+chart+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. While no scripts were extracted, the presence of these links suggests a phishing or malware distribution attempt. The document body is heavily obfuscated and contains embedded URLs, reinforcing the malicious redirection intent.

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=carbonation+chart+pdf
    • http://magogipif.padreserra.org/uploads/1/3/0/7/130738870/60bbf9a8465.pdf
    • http://files.innovationlabsinc.com/uploads/1/3/1/4/131438501/2ebf62a59272441.pdf
    • http://nakineje.sicconeinstitute.com/uploads/1/3/0/7/130775405/mekutuferefetazed.pdf
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/lijosemobivoko.pdf
    • https://cdn.shopify.com/s/files/1/0437/5963/2545/files/sony_brand_identity_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/80522811571.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/introductory_chemistry_7th_edition_corwin.pdf
    • https://cdn.shopify.com/s/files/1/0438/0160/8353/files/guide_itinraire_michelin_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/78114793226.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/nazevekofu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3573/5717/files/psychrometric_chart_rs_khurmi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/15284970624.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3693/files/carols_for_choirs_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/56628340898.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/virat_kohli_biosketch.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_off00006d41.bin
f0de38af49ef58523fa45a9de31c7bf7fd86fb9b1fff4107ea4d43e289ce345c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D41 5076 bytes
font_01_sfnt_off00007e78.bin
d5d2151683394f742ef10322a3662b83bf8767ca8685d731f9e23df4cfcd30e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E78 10516 bytes

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