Malicious PDF — malware analysis report

Static analysis result for SHA-256 8968383659c878b9…

MALICIOUS

PDF

68.7 KB Created: 2020-08-13 19:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 985c0d255987939127cb1b1f718be465 SHA-1: 92b87739164c621f401e24a77cb00a71f4e2fe99 SHA-256: 8968383659c878b997d77d0beb276411565fa2a9134e6414c1f8606a416aad8a
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is also present in the document body. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs, many hosted on Shopify. The primary malicious link is designed to appear as a product manual, likely to trick users into clicking it for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wb?keyword=lavadora%20edesa%20practica%201l-84%20manual
    • http://files.fossilmossbears.com/uploads/1/3/1/3/131398097/8275206.pdf
    • http://fokemex.charltongolf.net/uploads/1/3/0/7/130739267/f79c17367e2d.pdf
    • http://wiburise.widebaymotorcomplex.com/uploads/1/3/0/7/130775732/858851191d0.pdf
    • http://pewabad.farrellsframeanddesign.com/uploads/1/3/0/8/130874365/d66472.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/gedenixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8741/3923/files/10124257533.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5745/files/dazivigo.pdf
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/ctet_2020_sanskrit_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/wiraduxadudulo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0029/9683/files/livro_antes_de_partir_bronnie_ware.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/91085781134.pdf
    • https://cdn.shopify.com/s/files/1/0435/6295/9006/files/banking_service_chronicle_june_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/laluluzisimivomaxogabodiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/tomonusuwowa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3450/8455/files/ghost_stories_in_telugu_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5077/8275/files/free_download_bemba_bible.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/macbeth_act_2_questions_and_answers.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_off0000c627.bin
860697ceb0a390ab6cb161b9cecb95dcc63a5380d19c413552e35e1cab4961a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC627 5584 bytes
font_01_sfnt_off0000d92d.bin
9395dea755b05937697b2b278474fc332a3a161239cd0e152cb540a46747b6c3
pdf-font-stream PDF embedded font (sfnt) at offset 0xD92D 13876 bytes