Malicious PDF — malware analysis report

Static analysis result for SHA-256 736144fbf7ef4cef…

MALICIOUS

PDF

46.7 KB Created: 2020-09-06 19:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a10acf7d4b81ce4c92df474e89ad0a12 SHA-1: b02ae52ba97265b47743e45ba95dbe192aba4769 SHA-256: 736144fbf7ef4cef3b05b4824512dd07527d8f48caf20d756a9c82ca927a7069
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.me/wix?keyword=ettitude+bamboo+lyocell+sheets. The document's content and structure strongly suggest it's part of a phishing or scam campaign, aiming to exploit user curiosity or trust. The presence of numerous benign-looking PDF links further supports the malicious intent of a link farm.

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/wix?keyword=ettitude+bamboo+lyocell+sheets
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/fb5067_4a4f539c4c8a4b66a60bf620b02477b3.pdf
    • https://static.usrfiles.com/ugd/d4a9d6_6db0a77acce140d792262e7471d04098.pdf
    • https://static.usrfiles.com/ugd/2e79a6_5d7f13aa5263479385110081b30de1aa.pdf
    • https://static.usrfiles.com/ugd/8e1900_e7aae20e5bf342a990565725e563acfd.pdf
    • https://static.usrfiles.com/ugd/be5703_adff8a9892ba4181a5c21c4357bef932.pdf
    • https://static.usrfiles.com/ugd/451461_d0e3ceab4b1543c7ac15fbc037172aca.pdf
    • https://static.usrfiles.com/ugd/3bcfef_477cf146dcc4420db239ea8bc6fbd168.pdf
    • https://static.usrfiles.com/ugd/04e6f9_21e3633de9534e8fa084bc635a2e22ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_86be33b931344efba0f429b74e7e9e4c.pdf
    • https://static.usrfiles.com/ugd/b5472a_488b0cc93d01419aa1c42da46a2fc37d.pdf
    • https://static.usrfiles.com/ugd/89c6ad_c2d6d4d1e06440ea9ec7c21637dabadb.pdf
    • https://static.usrfiles.com/ugd/756799_d1640bdff557438fb327875f881666b9.pdf
    • https://static.usrfiles.com/ugd/99afdc_4422eb1314e84c9e8d5e24d4a38de1c9.pdf
    • https://static.usrfiles.com/ugd/aef5b7_c115ac92f59f47149997276778f19e4d.pdf
    • https://static.usrfiles.com/ugd/cece23_5aaa0a6c4e534a40b4378e651ddda456.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076e6.bin
1eebabc7e237aeb4f9fb6f0a7029783c16791266d9f17dc64d23fe0f313f100b
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E6 5280 bytes
font_01_sfnt_off000088bd.bin
d3871f6013f03d4736b7cde2512fd086a0397b82286507b6fa52e78b4a44ed30
pdf-font-stream PDF embedded font (sfnt) at offset 0x88BD 10808 bytes