Malicious PDF — malware analysis report

Static analysis result for SHA-256 d13d38ea64a9c43e…

MALICIOUS

PDF

45.4 KB Created: 2020-11-06 23:18:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8368408343d0e4138985680f30a192ec SHA-1: 79a8a3919b26cc49cca2f3388097993489f82258 SHA-256: d13d38ea64a9c43e8f25ac55380be1f1543bb97117ba92c138eeeea70e709b87
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL that is flagged as suspicious by the ML classifier. The document body also contains this URL, suggesting a phishing attempt to direct the user to a malicious site. No scripts were extracted, but the presence of the suspicious URL is a strong indicator of malicious intent.

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 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://traffine.ru/123?keyword=326-291-4831%253D-4796+is+true In PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/423297.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://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4b23344-19a8-450a-bbcd-08cfa94a7d20/37181441046.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/catie_study_schizophrenia.pdfIn PDF document text
    • https://womunulela.files.wordpress.com/2020/11/94632770901.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/actionscript_3_download.pdfIn PDF document text
    • https://jezadamoz.files.wordpress.com/2020/11/devamiramevilo.pdfIn PDF document text
    • https://supigakesev.files.wordpress.com/2020/11/25358168196.pdfIn PDF document text
    • https://foxonutovis.files.wordpress.com/2020/11/jumupusudap.pdfIn PDF document text
    • https://zopovamodutu.files.wordpress.com/2020/11/mifufavagatelajoru.pdfIn PDF document text
    • https://pazeden.files.wordpress.com/2020/11/86767518253.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B0 5108 bytes
SHA-256: 417faf048eb99a96be98cf42c74f5362078cbf87875f0dbef0799b75f668ac09
font_01_sfnt_off00007519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7519 11028 bytes
SHA-256: f001c23bed197d6ffc91b9d6c41bf8b2476e00468a2cf33cca57d2428af52fd5
font_02_sfnt_off00009a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A89 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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