Malicious PDF — malware analysis report

Static analysis result for SHA-256 db27ffa8d70256ad…

MALICIOUS

PDF

88.0 KB Created: 2021-03-11 08:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3dfeee7e7744728c7e2992ea6ec3ffad SHA-1: 7333f1e5005c75d115e3c33e0823eed31991ded7 SHA-256: db27ffa8d70256ada6f4dd0f4a9a905d0b54c68b3d01c74084b50b376d79069f
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm or SEO spamming operation. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/award?keyword=dream+on+bass+tab+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383804/normal_6044fc6c110c9.pdfIn PDF document text
    • http://duwudivusupo.mygamesonline.org/lemoka.pdfIn PDF document text
    • https://doxediseweroz.weebly.com/uploads/1/3/4/6/134634010/64cca44fa153.pdfIn PDF document text
    • https://tariroviwobin.weebly.com/uploads/1/3/4/7/134715354/82a10698f7cd003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401994/normal_5fe6f33f1ff38.pdfIn PDF document text
    • https://tagudosalanuku.weebly.com/uploads/1/3/1/4/131452811/porozunuberojedun.pdfIn PDF document text
    • http://hookup755.fun/ibps_clerk_form_apply_datescmia.pdfIn PDF document text
    • http://return-0.com/piguwovebulivokamalc2sus.pdfIn PDF document text
    • http://rumurel.mywebcommunity.org/the_grand_miracle_cs_lewis.pdfIn PDF document text
    • http://detonic-buy.website/sample_motivation_letter_for_scholarship_applicationqkqhd.pdfIn PDF document text
    • https://likimipezerejo.weebly.com/uploads/1/3/2/6/132682052/e5f7f.pdfIn PDF document text
    • http://hookup756.fun/xokowobalopipazadud3rnye.pdfIn PDF document text
    • http://bilet-pdd.site/pakofawufisaxavegu250bl.pdfIn PDF document text
    • https://devitigofe.weebly.com/uploads/1/3/1/0/131070043/8993745.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_b8ef9e80acbd41d0bcffb78ee144609f.pdf?index=trueIn PDF document text
    • http://vubelifijam.atwebpages.com/ao_del_modelo_atomico_de_dirac_jordan.pdfIn PDF document text
    • https://03386fec-e341-46be-bf9f-2f2bd19f9bfe.filesusr.com/ugd/bf57b5_342cbbec1bee47beb06b873e7b6ade05.pdf?index=trueIn PDF document text
    • https://37991ae0-d72b-4ccf-bf90-288dedd591e7.filesusr.com/ugd/041b56_95bf1156d9224663a57322663526fc68.pdf?index=trueIn PDF document text
    • https://54570836-76ea-4100-b78f-d1ba4c3cc0d1.filesusr.com/ugd/21ac59_deaea67e3fdd41918610b261e1aedb45.pdf?index=trueIn PDF document text
    • http://zogadawedalifap.onlinewebshop.net/what_is_the_first_harry_potter_movie_called.pdfIn PDF document text
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_d273d56a8de34b84adf9294c5c1bd37a.pdf?index=trueIn PDF document text
    • https://0f0532cb-4478-41f9-91a1-cf277c4732ec.filesusr.com/ugd/8acad3_93b98c91151f4ffb97685e5909851ebc.pdf?index=trueIn PDF document text
    • https://7aff118d-26f6-4d76-9bc9-1838009e7274.filesusr.com/ugd/f80014_ca7c06e843be434d829ab39a3aad5b11.pdf?index=trueIn PDF document text
    • http://kakasis.onlinewebshop.net/lusomedaxupopufotavol.pdfIn PDF document text
    • https://04934832-22f3-474e-96de-b9d593e92251.filesusr.com/ugd/f390e7_5de4f133b67f4903b1462a8928221629.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF7 5296 bytes
SHA-256: 2a7acb4831bfb0f822165ec7ae2685e3c1c3745f1e14a33bff58a3b47753bf11
font_01_sfnt_off000121dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DD 15736 bytes
SHA-256: 044ffea6cd00d5508886d318790e9e9c2db84356385f103e9585232d98dcbab8