Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba620e012212fc3e…

MALICIOUS

PDF

36.1 KB Created: 2020-08-21 09:11:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b6e958fad691518a572f94fa770d574 SHA-1: db0958f965ee301d12506c748fe00f7883a9496d SHA-256: ba620e012212fc3edbf72e5c0be6ce5acf6d2fe334e24f977669cd33dd884fd8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link, 'https://ttraff.ru/pify?keyword=division+by+zero+error+crystal+reports', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other benign-looking Shopify links, suggesting a lure to a spam or phishing campaign. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=division+by+zero+error+crystal+reports
    • http://mabuted.vitallifehypnosis.com/uploads/1/3/0/8/130813372/pofexibasepon.pdf
    • http://files.harborlandscape.net/uploads/1/3/0/8/130874620/34f81a5.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/42123170167.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/algebra_2_worksheet_generator.pdf
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/regrouper_plusieurs_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.pdf
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/basic_english_proficiency_test.pdf
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/5828218151.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/alimentos_con_alto_contenido_de_calcio.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/zitotawubutejab.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/69071300363.pdf
    • https://cdn.shopify.com/s/files/1/0435/6964/3675/files/how_to_train_your_dragon_2_putlockers.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/5216985828.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/ribogoruminofegapa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5528/3350/files/xumanamagozipopovupo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4154/4600/files/96542608508.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_off00004d34.bin
2fb8ff9f0d38846500e1ea380dc68338874993882a5262160a01ef262b0d2e85
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D34 5280 bytes
font_01_sfnt_off00005f42.bin
3232c49b7bf34998d677d4bbecdbd83ebbff19cf01fb9e1e64a2fb4dfc98a7a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F42 10572 bytes