Malicious PDF — malware analysis report

Static analysis result for SHA-256 52fe25ade6989ae4…

MALICIOUS

PDF

76.7 KB Created: 2021-03-16 06:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d809d214003ea42aa85eabcef75a8f54 SHA-1: 9f26e8deaf83a19b0fb8d31c578a97e120b2fa21 SHA-256: 52fe25ade6989ae49f96389a571c44653ef6e219f1b41cc12de7356658b58944
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://soxebez.ru/strik?utm_term=the+fall+guy+season+3+episode+17 PDF link annotation
    • https://kolofajek.weebly.com/uploads/1/3/0/9/130969684/zibenunetenefu-kimaziro-guvedal-tusepagebuguda.pdfIn PDF document text
    • http://tanijijud.sportsontheweb.net/dipakakizarezimobamufug.pdfIn PDF document text
    • http://madusotiju.22web.org/wwe_nxt_bleacher_report_live.pdfIn PDF document text
    • https://jisofuzevilane.weebly.com/uploads/1/3/0/9/130969501/4157723.pdfIn PDF document text
    • http://mozakotefeg.22web.org/pages_recipe_template_free.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/frigidaire_washer_dryer_combo_beeping_3_times.pdfIn PDF document text
    • http://wavokumad.iblogger.org/give_a_synonym_for_guided.pdfIn PDF document text
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/wogeda-damerupipafe-wukukewoj.pdfIn PDF document text
    • http://kakafeg.scienceontheweb.net/48001949309.pdfIn PDF document text
    • http://fakexexu.sportsontheweb.net/faxuvagorimer.pdfIn PDF document text
    • http://wimokarekore.22web.org/18432908274.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8d684a1e-4078-49cd-b336-05adf09473b6.filesusr.com/ugd/2b25e8_f153fdaf1b6f461fa4e345f30c60e84b.pdf?index=trueIn PDF document text
    • https://8d6920c1-aef5-45ed-b1a0-e693d63948fb.filesusr.com/ugd/0a593f_e76b7f9647664117aa287e50a2a1437d.pdf?index=trueIn PDF document text
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_621bf9a38f5e4d1f98dbfe4fe6872e52.pdf?index=trueIn PDF document text
    • http://teboroxaf.epizy.com/integers_worksheet_grade_7_with_answers.pdfIn PDF document text
    • https://f608bf75-187c-4b28-9621-af925c05c2b6.filesusr.com/ugd/05e3ad_61f24266618b4c2fac3b4dbfc94a3f85.pdf?index=trueIn PDF document text
    • https://94aa8f26-b07a-4c24-bdb4-4112657565c9.filesusr.com/ugd/37428b_e92c9b49ffa5456fa7ba75c7154e56b4.pdf?index=trueIn PDF document text
    • http://xizevobawilu.epizy.com/crochet_patterns_for_baby_blankets_with_animals.pdfIn PDF document text
    • http://solugivewatewa.myartsonline.com/complications_of_inferior_alveolar_nerve_block.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_off0000ec03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC03 5556 bytes
SHA-256: 36171771db7f31acd3722472b3f321ca6a36b48a0300793cc43e3ba0ab65c66a
font_01_sfnt_off0000ff01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF01 10888 bytes
SHA-256: 4f8c8f65edfaa901e8780b31535a4057ae3827dcb71e8dc5b857643f95ce15a9

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