Malicious PDF — malware analysis report

Static analysis result for SHA-256 30403c159c1f04c9…

MALICIOUS

PDF

39.7 KB Created: 2020-08-24 17:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 970e8912f0fb32e6ca4731f982c6aaca SHA-1: 0e721be1fb5fd672fcc2a0d249c5067d62ba1628 SHA-256: 30403c159c1f04c98a4cb98942b145d93135cf5bb72f184adb1899ab43030116
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=minecraft+aether+mod+1.+8+9'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, some of which are hosted on Shopify. The 'SE_CLICKFIX' heuristic suggests social engineering tactics to bypass macro restrictions, implying the user is expected to interact with the document content, likely by clicking the provided links. The document body contains garbled text but also includes the malicious URL, reinforcing the attack vector.

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.cc/pify?keyword=minecraft+aether+mod+1.+8+9
    • http://retud.vanderwerfviolins.com/uploads/1/3/0/9/130969754/gatoma.pdf
    • https://cdn.shopify.com/s/files/1/0434/8503/6708/files/cryotherapy_physical_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/47950481956.pdf
    • https://cdn.shopify.com/s/files/1/0437/8342/2109/files/98183407958.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/cantate_domino_heinrich_schtz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3778/files/ludimukikifikanazi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/xisukenavudazamokivovele.pdf
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/html_tags_with_examples_and_output.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/guziwuzupikadididep.pdf
    • https://cdn.shopify.com/s/files/1/0431/8786/3715/files/punctuation_worksheets_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0438/2933/0082/files/ciclo_cardiaco_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0439/4729/4875/files/pibeketuzidikemitajaluza.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_off00005c57.bin
479d30de0fc3e1ba6f2af30aa1fca9215f8f6dd95d3920ec9466f380c20e3040
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C57 5488 bytes
font_01_sfnt_off00006ee3.bin
0636c10fcb4354688612b2698c29843c665a17040231cd3e63f561141331244f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE3 10472 bytes