Malicious PDF — malware analysis report

Static analysis result for SHA-256 4287392539bfe799…

MALICIOUS

PDF

59.4 KB Created: 2020-08-24 00:22:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e8bb7d1215d25851d1aa32a0b487e63 SHA-1: 310aef5d0035f5d4564b03fcb99998a93db23dde SHA-256: 4287392539bfe7998e34f4b0cbf7a8b15f45ea6df46f45c429e623ea1dc25b79
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector URL, indicating an attempt to direct users to malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'Vistara airlines information' and the malicious URL, suggesting a phishing or scam lure. The presence of numerous embedded links, many pointing to Shopify, suggests an attempt to disguise the malicious intent within a large number of seemingly benign links.

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=vistara+airlines+information
    • http://najitux.northstatemycologicalclub.org/uploads/1/3/1/1/131164250/8a58c6.pdf
    • http://xuralo.38plus2productions.com/uploads/1/3/1/3/131398177/nejuwisugobad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0454/7385/7686/files/collins_official_scrabble_word_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/kowosevojupimopuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5059/files/xarezadi.pdf
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/71057285523.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8577/files/all_important_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zogubarekerebadopotuleju.pdf
    • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/nail_client_consultation_form_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/31606681479.pdf
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/wileyplus_introductory_statistics_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/2006_bmw_325i_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1784/6427/files/gavetawaratukaxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/assamese_calendar_2020_download.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_off00009481.bin
f92769073b1e5b99703f1f06de7999cc1b7534c379b9d62351bc7665c77e93b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9481 4880 bytes
font_01_sfnt_off0000a4ff.bin
f9b14e07baf2a5790504054ccc52fc8cbf92dfb45c5bc17ecbc87940d0632c51
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4FF 11276 bytes
font_02_sfnt_off0000cb90.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB90 16164 bytes