Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fdaddaf81055356…

MALICIOUS

PDF

51.3 KB Created: 2020-08-11 02:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c914abdf88db310c5ad2fde2ba1c428 SHA-1: c90cebca0c08172ebbca0a3ff5cc2c7409ecaeb5 SHA-256: 2fdaddaf81055356e5fc3640ce4db2817c8349cd4bf90d7ef75ffd25ac836c26
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=english+spelling+rules+in+telugu+pdf', which is the primary indicator of malicious intent. This URL likely serves as a lure to a phishing or malware distribution site. The presence of a large number of embedded links, many pointing to shopify.com, suggests an attempt to obscure the malicious destination or leverage legitimate platforms for hosting. No scripts were extracted from this sample.

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=english+spelling+rules+in+telugu+pdf
    • http://files.tampabayacs.org/uploads/1/3/0/7/130739476/455695.pdf
    • http://files.greyhoundstorage.com/uploads/1/3/2/7/132740836/178d98ce28d3f.pdf
    • http://pipel.vigostudio.com/uploads/1/3/0/7/130738970/97750.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3791/files/wewuvewabigilujukilesez.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/openvpn_duplicate_cn.pdf
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/42652069149.pdf
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/xofumupekor.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/constructivist_approach_to_research.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/babape.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/voulez_vous_danser_grand_mre_paroles.pdf
    • https://cdn.shopify.com/s/files/1/0434/9978/2309/files/vimogetebexejonavo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8399/6063/files/xavorutipobuxajivugudew.pdf
    • https://cdn.shopify.com/s/files/1/0454/0537/2584/files/all_airline_codes_list.pdf
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/send_text_message_from_gmail.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008048.bin
780d4a9449d3b3d75e3820b0763e61933f5508429cc5177fc33f48e1dda623af
pdf-font-stream PDF embedded font (sfnt) at offset 0x8048 5052 bytes
font_01_sfnt_off00009170.bin
70fc32be047fc4a48e7e5d56214509f21ef9799a18d7147a9c1ec3cdb2fa3585
pdf-font-stream PDF embedded font (sfnt) at offset 0x9170 2312 bytes
font_02_sfnt_off00009c08.bin
2d5e5aa03dc176a8bced7868b9501af6118f3a33e795ea36bf237088e05bca07
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C08 10812 bytes