Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd54aa4bb939d14e…

MALICIOUS

PDF

80.3 KB Created: 2021-03-18 13:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0d9d8e59ff931b489f7554487da576a4 SHA-1: 8f94d08e970d016c63c095dd40fd7a1fe7a2a318 SHA-256: dd54aa4bb939d14e472e233907bffb14da9b99ac8ebf4524be5c84c4c8b764ef
186 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, a technique often used for SEO manipulation or to host phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious sites, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • 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 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.
  • 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://golowaki.ru/wix?keyword=pelisdroid+apk+download PDF link annotation
    • http://easycreditscore.info/93558929547nllta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410447/normal_5fdb983af07ff.pdfIn PDF document text
    • https://poxomovuru.weebly.com/uploads/1/3/1/3/131381772/fowasabekamadi-fiduza-sudewow.pdfIn PDF document text
    • https://cdn.sqhk.co/kisasizaro/jfnjeid/events_and_adventures_dallas_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/nowonipewo/aayFJii/zudinix.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/31801254426.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451021/normal_5fe057778c295.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/bose_901_speakers_price_in_india.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/bjbhbij/best_deals_on_tvs_today.pdfIn PDF document text
    • https://tojemiwavujiguv.weebly.com/uploads/1/3/4/4/134468879/latimiwoja-kejiful.pdfIn PDF document text
    • http://acupofjacob.com/student_exploration_carbon_cycle_answershhxgh.pdfIn PDF document text
    • https://funotagikaxu.weebly.com/uploads/1/3/1/8/131857914/renipudorerude.pdfIn PDF document text
    • https://remitibomuko.weebly.com/uploads/1/3/4/8/134853657/benadafotam-telilevolimoj.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/is_the_jitterbug_flip_phone_a_good_phone.pdfIn PDF document text
    • http://bellissimo.online/26429754658uwcut.pdfIn PDF document text
    • https://nobexuliga.weebly.com/uploads/1/3/1/4/131405940/dibegagos.pdfIn PDF document text
    • https://maviwodoke.weebly.com/uploads/1/3/1/6/131606431/dasutepebapeno.pdfIn PDF document text
    • http://wspring.space/folktales_worksheets_for_first_gradeyf1jd.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/RVif2yu/24487822095.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493867/normal_601d7882276f3.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/mavorevagegilopekun.pdfIn PDF document text
    • https://fipufiradak.weebly.com/uploads/1/3/0/8/130813779/7674527d37767a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411702/normal_5febd8337f690.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/how_to_structure_an_org_chart.pdfIn PDF document text
    • https://nalimaxepizof.weebly.com/uploads/1/3/4/6/134662907/9987862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496151/normal_603ec86ccb91f.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/rovikudu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DA 5112 bytes
SHA-256: 9620dca40b75baf9bafd1f8d765d91723cda051babf10bc74a373351597f0508
font_01_sfnt_off0000f75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75D 11812 bytes
SHA-256: b8dbffa8cb1bbda0e6cb32a1c28276555fdc47f76109d09975c44e2abbc7f9f3
font_02_sfnt_off00011e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E24 16144 bytes
SHA-256: f0a8b786da721c7415a59d91fbce3b20bbb98ea32e48857ac1ff22d53b00ec29