Malicious PDF — malware analysis report

Static analysis result for SHA-256 f970854489a16133…

MALICIOUS

PDF

63.0 KB Created: 2020-09-17 16:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18c3dc31fcc490a83302f136f7310bea SHA-1: 6ec3dcc7f2e9c957a7a64ed98a79c5048c7bdbde SHA-256: f970854489a161332ea6844f6eee79a457ae008d621c59ded1d4b11e5f2497bc
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=t+fal+easy+pro+deep+fryer+instructions'. Additionally, the PDF is flagged as a link farm, containing numerous external links, many of which are to benign-looking but potentially disposable PDF hosting services. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to a malicious site via the embedded redirector.

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=t+fal+easy+pro+deep+fryer+instructions
    • http://files.oiim.net/uploads/1/3/1/0/131070792/suvekefokebati.pdf
    • http://jotus.miccmn.com/uploads/1/3/2/6/132681670/rapizozibepago.pdf
    • http://files.newyork-homeinspections.com/uploads/1/3/0/7/130774979/moravozurako.pdf
    • http://sesivux.kingfisher-strategy.com/uploads/1/3/2/3/132302868/9874854.pdf
    • https://617914e1-815e-4a3b-b61e-a0d9cd3d5a6d.filesusr.com/ugd/585b1d_9d29a15c7d6d48f393758a561bf19f3e.pdf?index=true
    • https://19c47903-804a-4bcb-813b-6a10488a0668.filesusr.com/ugd/96768c_6d1fe241a57245e4b6f842ba5c36cdee.pdf?index=true
    • https://1ee9778f-4198-4aa1-bfc3-deb8a2add0e0.filesusr.com/ugd/3801ff_da81deedfb1b4d31b6c7f64e8b2fe056.pdf?index=true
    • https://ecb96bd0-8d3c-407c-b231-9071c9cab434.filesusr.com/ugd/1fbf8b_bee8d8c8604e4dafaba8508635ae1c50.pdf?index=true
    • https://89924628-71f2-4530-9c53-93cac3969ed8.filesusr.com/ugd/c34aa9_11314c7a0c4a4e8884fdce5b8367957d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/povasagunav.pdf
    • https://cdn.shopify.com/s/files/1/0435/9477/6739/files/kuzajuzuvepizixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/brown_bear_brown_bear_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/1101/2770/files/ziberikejepukun.pdf
    • https://cdn.shopify.com/s/files/1/0436/4831/9638/files/truth_tables_of_logic_gates.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_off0000ae73.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE73 2828 bytes
font_01_sfnt_off0000b86e.bin
f0757a798c186a5bd15ae1a407eee5424a5f1664e45b821b58172eed37f1a22c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB86E 5200 bytes
font_02_sfnt_off0000ca39.bin
bd44f2ff7367ac85a08bbec58a5c2b8303cdca008afb9d13e15d019ee691f8e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA39 10128 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.