Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf65708c94305d8…

MALICIOUS

PDF

50.0 KB Created: 2020-09-17 01:27:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2eca81c9ea5305ee48338b28a31d0d21 SHA-1: f1db6e095a5fda7b215c144f4e82b5b1490f7d35 SHA-256: fcf65708c94305d87f124344d75e38c246522a1b8a7f21d35126b053c8680acb
184 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector and others forming a link farm. The ML classifier also strongly indicated maliciousness. The document body text, though garbled, includes a URL that matches the redirector link found in the heuristics, suggesting a lure for users to click through to malicious sites.

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.link/wix?keyword=a+beautiful+mind+study+guide+answers In PDF document text
    • http://xofepozo.5fingersand10toes.com/uploads/1/3/2/3/132302995/dilipelobide.pdfIn PDF document text
    • http://mirasen.vibrationsforlife.com/uploads/1/3/0/7/130739140/tokiwaluka.pdfIn PDF document text
    • http://files.phillipsbanini.org/uploads/1/3/2/6/132695714/golabusapegitexizeja.pdfIn PDF document text
    • http://files.ourladysyork.org.uk/uploads/1/3/1/6/131636990/gaxomugulife_pesabufukilepu_rixapeg_mavitubopam.pdfIn PDF document text
    • http://files.iampositivelywell.com/uploads/1/3/1/4/131438405/6249628.pdfIn PDF document text
    • http://kawer.garethaustin.com/uploads/1/3/2/8/132814930/vubodaguwubalate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://81b21591-5749-4edd-bfb3-0308718e7e97.filesusr.com/ugd/7dfe85_62f52a50fa284db4924b55f9b4e18fd2.pdf?index=trueIn PDF document text
    • https://3a95d93f-e817-4b7f-8d7e-6cee1db44f4a.filesusr.com/ugd/90423f_3c66db0d160548f58caa3a8758ecda1b.pdf?index=trueIn PDF document text
    • https://aaa66a54-7b9d-441f-ace1-144d54afcdef.filesusr.com/ugd/ad8f3a_f0ca5fdef2314a4e82a0bf0ee5559135.pdf?index=trueIn PDF document text
    • https://08122f6d-1a56-4aa6-befa-a5c405764e6b.filesusr.com/ugd/d13e1f_4013349d15344ee3bed912aae11fd744.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1790/9910/files/firelutuduzogifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/sad_piano_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/32948575205.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000765f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765F 5320 bytes
SHA-256: d7b2713d712fc46dc313ced9eeefb7f5b536ba71150831c75f5b5b5f2d42ba7b
font_01_sfnt_off0000886a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886A 10880 bytes
SHA-256: 13e2d23cd9ec2517eb14ddec7a715c5023ac3e6556492cfeae8e87700d2365b8
font_02_sfnt_off0000ad4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD4A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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