Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9382005312d69f…

MALICIOUS

PDF

136.9 KB Created: 2021-04-16 15:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3da71c27e42f354db8a93fba2661503d SHA-1: 182d6c2ac424714eb9c50ab1571a623ff3e1b7d4 SHA-256: ed9382005312d69f86fac4ea61a53e09641a855785a6d79f43f8fa2fbdff00a7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9986

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=define+trop+in+medical+terms PDF link annotation
    • http://judifino.iblogger.org/begifezitukujareru.pdfIn PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/e301afa.pdfIn PDF document text
    • http://vizozipemovowe.iblogger.org/62809839040.pdfIn PDF document text
    • http://tefukuk.iblogger.org/lozuri.pdfIn PDF document text
    • http://tuduvodakep.mypressonline.com/uniquely_human.pdfIn PDF document text
    • https://fabebebu.weebly.com/uploads/1/3/2/7/132740756/gefudidelo-lufudezu-jafak-kofudad.pdfIn PDF document text
    • http://ferobuxanax.iblogger.org/checkbox_excel_android.pdfIn PDF document text
    • http://pililiriniru.mypressonline.com/carcinoma_pancreatico.pdfIn PDF document text
    • http://fapumew.22web.org/free_blank_invoice_template_uk.pdfIn PDF document text
    • http://jajuviramigawo.medianewsonline.com/graphic_design_branding_portfolio.pdfIn PDF document text
    • https://junerokiwoji.weebly.com/uploads/1/3/0/7/130775834/vepipetif.pdfIn PDF document text
    • http://netusikofigo.22web.org/kelewedefusavatefidola.pdfIn PDF document text
    • https://zoxopabetil.weebly.com/uploads/1/3/1/1/131163737/boveverokeg-latus-pemixazisu-wimisimumu.pdfIn PDF document text
    • https://pejudipevunasu.weebly.com/uploads/1/3/5/3/135351173/1963186.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suzurexitumafod.epizy.com/65298756860.pdfIn PDF document text
    • http://divakupi.rf.gd/q_es_clulas_falciformes.pdfIn PDF document text
    • http://tebexuvizo.rf.gd/boynton_beach_police_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba3c510c-bf1b-4a51-a1a2-4a1597ace871/who_made_up_the_second_estate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a91e7e3-f4f9-4efc-8d69-058f99f49a92/91599192431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1c4ba11-d7b0-46d7-a7ce-3a6bca3817ca/pilgrims_progress_chapter_13_summary.pdfIn PDF document text
    • http://gakuxidufujun.rf.gd/alcoholics_anonymous_12_steps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b775535-8fcf-4f1e-b520-33df2b84ab3a/54889955635.pdfIn PDF document text
    • http://fakipewoze.rf.gd/candy_camera_hd.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_off0001ddff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DDFF 5300 bytes
SHA-256: a5e940bbac7496dd09efed53b8a9f46ce90df6f72d4acf7bd7ee94f11aa02a12
font_01_sfnt_off0001eff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFF0 11168 bytes
SHA-256: 7e1fce95b913eb668ec6e199aadaa8a12e0ad27d1ff1224f1449ca9bd8675e53

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