Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e775e8de9690bf…

MALICIOUS

PDF

46.9 KB Created: 2020-08-19 00:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31c0d328b45d332392fff9bafaa1b490 SHA-1: 0875375dc9446195afb78626270ace747aad6ddb SHA-256: 75e775e8de9690bf3f43be0d75f3c34f28edd424ffd1923bef2af6e9747bfbda
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to 'hedging finance' and includes a critical heuristic firing for a malicious redirector link to 'ttraff.com'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, some of which point to potentially malicious infrastructure. The 'SE_BROWSER_INSTALL_LURE' heuristic suggests the document's content is designed to trick users into installing something, likely to facilitate further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=hedging+finance+pdf
    • http://tekodire.assertion-evidence.com/uploads/1/3/0/7/130738993/5273141.pdf
    • http://files.paraglidinginkorea.com/uploads/1/3/1/8/131857112/87b4e6264a60805.pdf
    • http://lebizaj.atcoflex.com/uploads/1/3/1/4/131453109/denudaraginasefut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdf
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/zitiwitove.pdf
    • https://cdn.shopify.com/s/files/1/0431/4343/0305/files/entropy_meaning_information_theory.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6209/files/82415258282.pdf
    • https://cdn.shopify.com/s/files/1/0450/8601/5640/files/amazing_grace_free.pdf
    • https://cdn.shopify.com/s/files/1/0445/9524/9316/files/70012979786.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/naxigofu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/45078940457.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/occupational_health_and_safety_act_1984.pdf
    • https://cdn.shopify.com/s/files/1/0441/0828/4056/files/longman_academic_reading_series_2_teacher_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/39321779631.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_off00006c3c.bin
6d86adb94ca8e3791bb49f19373bcfda40f973a28046f6b16e60e4adea3e6986		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3C 4980 bytes
font_01_sfnt_off00007d43.bin
14ac74f0123fc7718fae096a500c68670e63e5b694a449ce73fc293ca25738ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D43 16092 bytes

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