Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c108effb3950fe0…

MALICIOUS

PDF

35.0 KB Created: 2020-08-22 17:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6274c0646227cf80658dcd5c938c0fb5 SHA-1: 5b79a5305b6afbd93a1a382850f65fe5aa804a86 SHA-256: 9c108effb3950fe0db2b8cf8707f5e9ea4702dd302de23e20335ac3d141e1638
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'sheet music'. The primary malicious URL identified is https://ttraff.com/pify?keyword=edith+piaf+milord+sheet+music, which likely serves as the initial entry point for a further payload or phishing attempt.

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/pify?keyword=edith+piaf+milord+sheet+music
    • http://worenokop.youngworlddayschool.org/uploads/1/3/1/6/131637016/suvobawusonav.pdf
    • http://files.mariestewartconservation.com/uploads/1/3/1/4/131408103/2658431.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/78891770984.pdf
    • https://cdn.shopify.com/s/files/1/0450/7992/0803/files/oxford_discover_5_grammar_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/78980804431.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/94527131803.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/summoning_calculator_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0452/5057/6541/files/performance_appraisal_examples_quality_of_work.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/cissp_testking.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1014/files/pojedynek_mary_balogh.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/72813517210.pdf
    • https://cdn.shopify.com/s/files/1/0439/1079/1323/files/wewobid.pdf
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/akka_framework_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/pick_a_number_between_1_and_8.pdf
    • https://cdn.shopify.com/s/files/1/0438/3273/7942/files/fexezanej.pdf
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/kiran_bpsc_question_bank_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049fe.bin
afbe2a3347e8ca4a8a7e59528e03dc7ca06c2cd6c4097ddbc16c6d737ca3065b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49FE 5352 bytes
font_01_sfnt_off00005c0e.bin
c38644537534a0e591bd4335e248b33fccb30f4a67a3c03d1bbb14b128dde896		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0E 10232 bytes

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