Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb64c69a2a050ab2…

MALICIOUS

PDF

43.6 KB Created: 2020-07-30 14:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 051a1035ab59b19160e3a0fdc6bef021 SHA-1: 82614d35fa211961795f5fcb3ace8ab0bbca98f6 SHA-256: bb64c69a2a050ab2b8830b6ce1eacdf8f8433c3aa76ed0f441dd47a6c27686fe
158 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and links to known malicious redirector infrastructure. The primary lure appears to be a document titled 'Kebutuhan dasar manusia kebidanan pdf', which redirects to a malicious URL. The presence of embedded JS and the malicious redirector strongly suggest an attempt to deliver a secondary payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.ru/pify?keyword=kebutuhan+dasar+manusia+kebidanan+pdf
    • http://files.tasty-wok.ca/uploads/1/3/0/8/130813364/mitabidosatutubaveka.pdf
    • http://files.douglaslynnwhite.com/uploads/1/3/2/6/132681863/ketifafapulogakenuve.pdf
    • http://files.reddeerhospice.com/uploads/1/3/2/7/132712323/nareboxovoxe_gasikele_wiraxiva_javab.pdf
    • http://files.withmysoulwellness.com/uploads/1/3/1/6/131606201/fefuluj.pdf
    • http://files.match-gems.com/uploads/1/3/2/7/132740598/913690.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/84349039880.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45865267400.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4983/files/37406854170.pdf
    • https://cdn.shopify.com/s/files/1/0431/7128/3098/files/40525069409.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9496/files/xawedemetawusominupal.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/32245985160.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3799/files/misepidedajonivorowiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/8806545541.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0072/files/19601402528.pdf
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/mowororibaxusugikani.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sos

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e3b.bin
7f20e5d27e57f67f184ab2ef63ec2e7ab8ab75436cb20e12aeaa39de3927fa95
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 5196 bytes
font_01_sfnt_off00007fa5.bin
28166ed83e78331d9f9fa0596404891ed71c46ff4370cd0a5dd8e1b3f71c22bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA5 9692 bytes