Malicious PDF — malware analysis report

Static analysis result for SHA-256 4074c022b3a17acd…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 11:37:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0bf75da40074c6ef57809a98412df5b SHA-1: c8a60734e78c329f5653661bdba05864b2c034f2 SHA-256: 4074c022b3a17acda74ed69a3b6894ed2a872dce353fe36dce4b1f5ea7d3a87c
160 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of a 'Password-protected archive lure' heuristic indicates a potential secondary stage involving encrypted payloads.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/pify?keyword=aeration+tank+pdf
    • http://files.alsasolar.com/uploads/1/3/1/8/131872178/wadobixo_fodez_xerowamugid_rawowibilago.pdf
    • http://files.fit2go.ca/uploads/1/3/1/0/131071252/nudajurobosureke.pdf
    • http://files.rickhoman.com/uploads/1/3/2/7/132712088/7832125.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/jumoxaliwijel.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/kabetiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/wasekuvewifodenewido.pdf
    • https://cdn.shopify.com/s/files/1/0441/1126/5944/files/vitudolevepibobuzomo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/77980585726.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/convert_file_to_word_2020_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4724/7263/files/2020_buick_regal_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/free_7th_grade_math_worksheets_with_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/34937632381.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/pontiac_g6_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/32914541207.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/win_rar_password_unlocker.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_off00006b2f.bin
c2273ea596bc554a69302bfafb85851040a4825759cb340300a3b12fdff29eb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2F 4880 bytes
font_01_sfnt_off00007bdd.bin
d9349f9f7a9b73b66390f9118e4bdd732a4851b5a6c72f604a174ebfcbb639a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDD 10236 bytes