Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5baab044a5357c…

MALICIOUS

PDF

39.0 KB Created: 2020-09-14 04:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0466f38c639f183afbd2d9d287200140 SHA-1: ea179f78d2fa3b28b055791cb9cb67f1a89bc60f SHA-256: 5b5baab044a5357c4a3d80f891e8fafa116903d1b8f7e473750eacfc7b37910e
184 Risk Score

Malware Insights

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

This PDF document functions as a link farm, containing numerous embedded URLs that lead to external websites. One of these URLs, https://ttraff.ru/pify?keyword=tipos+de+angulos+y+ejemplos, is identified as a malicious redirector. The document's structure and content suggest an attempt to lure users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.ru/pify?keyword=tipos+de+angulos+y+ejemplos In PDF document text
    • http://files.thefilamentstudio.com/uploads/1/3/1/6/131606035/fakesijerisaz.pdfIn PDF document text
    • http://files.elknwillow.com/uploads/1/3/1/4/131452950/2964976.pdfIn PDF document text
    • http://files.steigerclass.com/uploads/1/3/0/7/130776589/4427500.pdfIn PDF document text
    • http://files.slang4201.com/uploads/1/3/0/7/130739916/96ebe.pdfIn PDF document text
    • http://futunoxax.movanderdoes.com/uploads/1/3/1/3/131383943/4942140.pdfIn PDF document text
    • http://files.myheartmystate.com/uploads/1/3/1/4/131453256/davuwom-kozojejoxon-busut-kanok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/2637/3797/files/92027868787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8187/3048/files/melefajeledaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8565/0325/files/jigosi.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3bd8c060f0054c4aaf48efed9692b423.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ed64d2_2767b1818625494ea842c0020d056348.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5a4c69_dfc1056cf7ff42b9bdbf1aa5afb0f281.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2b3f46_308e2b25c29d4595b81f78021535d8bf.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CA 5308 bytes
SHA-256: df377e92a71670f7e5c37553843660766580dfeabf3c3d134e21f790f4c94a2f
font_01_sfnt_off00006bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDA 10576 bytes
SHA-256: fa502e7af7fb2438ccae77b2d3297bfb326f6fdf9d3ba727ff5af13a2d0ce3af

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