Malicious PDF — malware analysis report

Static analysis result for SHA-256 780bd3b769673825…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 03:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d12b85459c9f59113e4343ad21afa9c SHA-1: b24dc3ab9e95099e721de0d4fc0713904053dfd8 SHA-256: 780bd3b769673825ef9a906e39cd2e2fa41d4c2160b655a4c97f049ccc7350a3
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to ttraff.com. This URL is part of a redirector chain designed to lure users into downloading further malicious content. The document body, though heavily obfuscated, contains the same deceptive title and URLs, reinforcing the social engineering aspect of the attack.

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=creative+problem+solving+in+school+mathematics+pdf+download
    • http://jarolud.peopleschurchtruro.com/uploads/1/3/0/7/130776485/zulirizojin_vatodanupu.pdf
    • http://files.nhbirth.com/uploads/1/3/1/4/131408798/6045894.pdf
    • http://files.feszty.com/uploads/1/3/1/3/131379615/piletuxelebow-mosatutizoke.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/65841698022.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/48134000241.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/68753016905.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/papirulukejawukegomipomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/enchiridion_epictetus.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/rebibugix.pdf
    • https://cdn.shopify.com/s/files/1/0437/5589/6990/files/70224890477.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/risutopapew.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/76313730629.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/past_simple_and_present_continuous_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/www_wwwdotcom_com.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_off00006ee0.bin
afd719e97d122b6cd0f948bb71389772684bc05b2afb8b89ee8f8813a14d0a1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE0 5672 bytes
font_01_sfnt_off00008208.bin
7c93ce903b20d31461dc006e9445d4ddcd7966ad77775a0b4c24ce56c0d9c0b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8208 10228 bytes
font_02_sfnt_off0000a4fb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4FB 4324 bytes

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