Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a189c54fe9d551…

MALICIOUS

PDF

92.1 KB Created: 2021-03-24 04:01:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1d2a5cdc800f201178c42153b466dd04 SHA-1: dde5fae24ea66d833755dee35e9228a2fc6fbbc4 SHA-256: 26a189c54fe9d551aa4a723a74d512dd866389d526de58a4e0813584714db122
134 Risk Score

Malware Insights

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

The PDF contains multiple external URIs and is flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan delivery attempt. The presence of a link farm on disposable hosting and the use of urgency lures further support this. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect the user 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jumiwimov.ru/strik?utm_term=army+air+force+football+game+today PDF link annotation
    • https://cdn.sqhk.co/bikegola/gdQhehf/rigoxatejuwelure.pdfIn PDF document text
    • http://lilozekakotelup.sportsontheweb.net/agriculture_biologique_au_cameroun.pdfIn PDF document text
    • http://relax35.ru/in_christ_alone_my_hope_is_found_sheet_music_free3ck3u.pdfIn PDF document text
    • http://benilobodereji.mygamesonline.org/miopa_astigmatismo_e_hipermetropa.pdfIn PDF document text
    • https://cdn.sqhk.co/vafegijateno/YjehjMQ/94902557342.pdfIn PDF document text
    • http://ropufowi.iblogger.org/xulivotokizusido.pdfIn PDF document text
    • https://dizubegunusu.weebly.com/uploads/1/3/4/8/134889053/xudurikikiv.pdfIn PDF document text
    • http://hesap-al-sat.com/49014373288kpato.pdfIn PDF document text
    • http://remontlegko.info/camara_canon_ds_126_491u1m0z.pdfIn PDF document text
    • http://itslm.fun/dokamucdab7.pdfIn PDF document text
    • https://wawowipibi.weebly.com/uploads/1/3/3/9/133997364/fuwap_gebop_dijibokodupak.pdfIn PDF document text
    • https://pakimisubimoge.weebly.com/uploads/1/3/0/7/130776027/gibevikazagu.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxukulalodi/cjhJg7E/home_exterior_painting_cost_estimator.pdfIn PDF document text
    • https://cdn.sqhk.co/rirexiwudag/ejdgfXc/dogwood_tree_for_sale_lowe_s.pdfIn PDF document text
    • https://cdn.sqhk.co/sabimejuka/iaChfhj/eagles_greatest_hits_volume_1_and_2_vinyl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lozijuxul.rf.gd/longman_academic_writing_1.pdfIn PDF document text
    • http://zapopododo.rf.gd/99691471694.pdfIn PDF document text
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_c6498a3262b24717b614879eae87c311.pdf?index=trueIn PDF document text
    • http://teluroluxeterez.myartsonline.com/elementos_del_genero_dramatico.pdfIn PDF document text
    • http://fufawadir.epizy.com/chili_s_to_go_menu.pdfIn PDF document text
    • http://zasuwunal.myartsonline.com/english_dictionary_with_pronunciation_and_meaning_free_download.pdfIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_3c047756350d46319c278c3ca8388659.pdf?index=trueIn PDF document text
    • http://wiwazez.epizy.com/sopolofikekebotipibojegup.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12723 5396 bytes
SHA-256: 68ac243ea3ade83999a865130d6a9d12762eca4f41c2989f95d2752159efefc7
font_01_sfnt_off0001396e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1396E 11736 bytes
SHA-256: c5ab7be11089d0e67a3c28d0f3f762f27d5d9a704686d41bc4bc591027d35d90

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