Malicious PDF — malware analysis report

Static analysis result for SHA-256 f025bc22478303f0…

MALICIOUS

PDF

93.5 KB Created: 2021-04-02 05:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 089a7869c0e3ef0f1eca9b340c0421b8 SHA-1: 82ef7d54d2c1398141e4723ab60ad23589bace37 SHA-256: f025bc22478303f0aba1ec487e7dfa9a1025fdc9469b3f0137af4c0631555285
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pelibifir.ru/wix?keyword=uncharted+the+lost+legacy+trophy+guide+powerpyx PDF link annotation
    • http://devlp.design/canto_el_pajaro_carpinterootmhj.pdfIn PDF document text
    • http://pushbiz.fun/28933474116bo5b3.pdfIn PDF document text
    • http://vigastlens.xyz/dunkin_donuts_glazed_donut_nutritionzvpvy.pdfIn PDF document text
    • https://xujopikaxatanow.weebly.com/uploads/1/3/4/8/134850499/dobiso.pdfIn PDF document text
    • http://hurricane1.space/bovufunidanemuzipabitekass66af.pdfIn PDF document text
    • https://jaxenexeleti.weebly.com/uploads/1/3/5/3/135320290/pumujazivupulap.pdfIn PDF document text
    • https://bajarewejewud.weebly.com/uploads/1/3/4/6/134673735/490f8f4.pdfIn PDF document text
    • https://labelamujevodit.weebly.com/uploads/1/3/1/6/131606697/67b98b40e3f6a1.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/conversations_in_american_literature_answersun5y4.pdfIn PDF document text
    • http://tiktokfrance.fun/91765916498kbro4.pdfIn PDF document text
    • http://logmeinnow.xyz/861008908725brzu.pdfIn PDF document text
    • http://pizolizuvupomip.iblogger.org/green_belt_certification.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifiserumokek.epizy.com/75357890915.pdfIn PDF document text
    • http://jajapelemazibog.rf.gd/72671350062.pdfIn PDF document text
    • http://povovudajax.rf.gd/2401283714.pdfIn PDF document text
    • http://mutodilevo.epizy.com/mathworksheetsland_order_of_operations_word_problems.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_off00012e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E94 5588 bytes
SHA-256: c5b4b15a42c3f5846ba94357154bd501cb3b34b5683624d28a7b70988c59c005
font_01_sfnt_off000141aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141AA 11488 bytes
SHA-256: ea424fadffbbf735029b89e5df899f6b10c4e2ce7ea26000a23c96282371b265

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