Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd20a8dbbd8fe0f2…

MALICIOUS

PDF

46.6 KB Created: 2020-09-16 15:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0115112d7f9b39313408cd3b5ac8747b SHA-1: 7ae43499e84ec9a7729a38cf73fba71a6a1422ef SHA-256: dd20a8dbbd8fe0f296d00ce63c46d141a23aced554c1d5a6bb5cfb8e4075d38b
184 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many of which point to a redirector service. The primary malicious URL, 'https://ttraff.cc/wix?keyword=ryobi+pressure+washer+user+manual', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the URL and appears to be a lure for a "Ryobi pressure washer user manual". The ML classifier strongly indicates maliciousness.

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.cc/wix?keyword=ryobi+pressure+washer+user+manual In PDF document text
    • http://files.rosegordon.net/uploads/1/3/1/4/131437632/kusuvok_wazisemelepiziz_damaxife.pdfIn PDF document text
    • http://sebujanir.olsonarchitect.com/uploads/1/3/1/0/131070911/002b4c.pdfIn PDF document text
    • http://files.iluvmemore.com/uploads/1/3/2/3/132302815/ea158.pdfIn PDF document text
    • http://bizobena.soma-psiche.org/uploads/1/3/2/7/132710575/e6f847ab.pdfIn PDF document text
    • http://files.66tandem.com/uploads/1/3/1/4/131438313/7458393.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bbb6adaa-e996-4a76-91fe-dac8fba7fc9c.filesusr.com/ugd/e948c1_6cfdd88809a247d398c6a9fd98660ab8.pdf?index=trueIn PDF document text
    • https://c4fe7d65-d0af-49a5-9d64-52b9f274bfad.filesusr.com/ugd/565485_54cbb6af095344d0ad5c96b6651f0345.pdf?index=trueIn PDF document text
    • https://c2f78dcc-34b2-4c89-bbea-62a95e335b65.filesusr.com/ugd/417718_cd5d4cb6859f4118913bd7120a5c4cd1.pdf?index=trueIn PDF document text
    • https://148c3382-cd48-4444-a9a0-9f31c451826b.filesusr.com/ugd/29c71c_70c5fce5772541099b9eefcd735a34ee.pdf?index=trueIn PDF document text
    • https://d09dfff2-25c5-49c3-9700-d6e0b514be99.filesusr.com/ugd/3e7897_29df688d476e4b77aa38a215d3c1838a.pdf?index=trueIn PDF document text
    • https://7d797e98-6d4e-44ff-95c6-7abc4fd64948.filesusr.com/ugd/d5415a_b034a0c75c954c43a6bd04459ec7d900.pdf?index=trueIn PDF document text
    • https://47948147-9b2b-40c9-a8c2-bb427d678c4f.filesusr.com/ugd/7be1cd_efeca0470ec94dca86bd2a08e29ee2e5.pdf?index=trueIn PDF document text
    • https://6533a6e3-faa8-4939-ba4e-d59b475b3df6.filesusr.com/ugd/26481d_10e448099e0a42c89760c6536ac81d91.pdf?index=trueIn PDF document text
    • https://571ab5bd-f1a1-40d7-81da-bfa8395d40ac.filesusr.com/ugd/89064d_bb062134b9f742c892ee8fd0ee9d65be.pdf?index=trueIn PDF document text
    • https://8a087845-9f40-4eac-a3b0-26eacf9f4291.filesusr.com/ugd/9cfd0a_1bdf57bde0dd484d8698afb234628d3e.pdf?index=trueIn 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_off000076e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E5 5400 bytes
SHA-256: 5d34816253a533a94f5743495b2724ac99308b05d4c9916339e5502f7d1631ef
font_01_sfnt_off0000892e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892E 10616 bytes
SHA-256: f5448fc51614831111930c39a89f333c06052235dbc6c04d94b17036ef1b431d

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