Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd89412d9d82c1c…

MALICIOUS

PDF

76.9 KB Created: 2021-03-29 18:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e67d843335d6f576c709be2f8319ade4 SHA-1: 1a6ce13f7d7ce1c7c1c83f8fea0fb026acd7a9ba SHA-256: fdd89412d9d82c1ccb475e4c8b845fef8a31b7f82aa80d99382bf6222ee5c667
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/award?keyword=agility+exercises+pdf PDF link annotation
    • http://fejavodexata.getenjoyment.net/nobabe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451945/normal_5ffc295e994de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391602/normal_5fd0e9bc9078e.pdfIn PDF document text
    • http://kitixukizogutik.mygamesonline.org/zirexugutufavetabeji.pdfIn PDF document text
    • http://torixobo.mypressonline.com/angulos_entre_rectas_ejercicios.pdfIn PDF document text
    • https://cdn.sqhk.co/wevemugas/gToPih2/nice_cheap_button_down_shirt.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/hHuhcGf/nuzusorazuzesobaposipo.pdfIn PDF document text
    • http://fitness-ital.fun/java_mcq_with_answers_free_download73sw2.pdfIn PDF document text
    • http://fishland.store/the_man_in_the_high_castle_saison_4_wikipedia8lglv.pdfIn PDF document text
    • http://rameautbxy.space/sibet5ey5w.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/como_hacer_una_hoja_de_vida_sencilla_2019.pdfIn PDF document text
    • http://acupofjacob.com/fabufabelejaviav8bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483842/normal_600414d388cfb.pdfIn PDF document text
    • http://ca-manalapan.space/aprilaire_thermostat_8466_installation_manualurxvv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://76c9fb28-c10e-4950-85be-37de24a2ede8.filesusr.com/ugd/fa32a6_066d233c1d9f46d69d2bceadeb212bae.pdf?index=trueIn PDF document text
    • https://6648aa49-deb3-4d6f-81a8-a63cc7a297fb.filesusr.com/ugd/38eac1_cf6e566560ac41b5a3fbebf2e360807b.pdf?index=trueIn PDF document text
    • https://1d20f49f-ccd6-4d05-b9af-9ecc574be1a3.filesusr.com/ugd/7b50d7_40ce89164c3f4cd996dd6f0aa21c4c69.pdf?index=trueIn PDF document text
    • https://3dbd840c-7861-42b4-b064-af52d1d2f4eb.filesusr.com/ugd/86319b_5398e5b297da456fb6ba4dd5b959ba28.pdf?index=trueIn PDF document text
    • http://todifisafi.atwebpages.com/tonamititufuporajupan.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_off0000ef52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF52 5272 bytes
SHA-256: 801647a2ae19dab2054e470d1db23ce99460e0078c0ff940e82733d608f41a41
font_01_sfnt_off0001016c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016C 10840 bytes
SHA-256: df97f2366e7a0c0b32f24e30c308e442b9c3b2500c2a6c8d589f4ad4d6939749

Open this report in the interactive analyzer, or submit your own file for analysis.