Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b3194743205ebf…

MALICIOUS

PDF

77.7 KB Created: 2021-05-12 20:22:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4793241bc56873f521c5bdb20a242092 SHA-1: cd3e1e61740ff300b0ff7710595b3c0364061c8f SHA-256: 02b3194743205ebfb73ad8cd43ac5797b671bec40df7b65a8661fe781d365681
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged by multiple heuristics as a link farm and potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the structure and URL patterns suggest an attempt to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/strik?utm_term=how+can+i+increase+my+intuition PDF link annotation
    • http://ninuxalezopo.getenjoyment.net/paketikiz.pdfIn PDF document text
    • http://mosomupusafebin.medianewsonline.com/gixorol.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/marantz_sr5009_bluetooth_problems.pdfIn PDF document text
    • http://warajuvevuv.medianewsonline.com/alternative_tourism.pdfIn PDF document text
    • http://lizowaw.scienceontheweb.net/acgih_2020_download.pdfIn PDF document text
    • http://tobufupevujuma.mygamesonline.org/the_different_aspects_of_islamic_culture_unesco.pdfIn PDF document text
    • http://dapurixid.sportsontheweb.net/gogumenudejavixaxepawa.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/scan_document_to_converter_free_download.pdfIn PDF document text
    • http://juvovagesubo.mywebcommunity.org/vocabulario_analogias_sinonimos_antonimos_homofonos.pdfIn PDF document text
    • http://zoxodur.sportsontheweb.net/63020184072.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_084a5b8833e940dabe7672e44907e1cf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/70111824-9b40-4d32-8d41-16844db41461/348342353.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/axa_equitable_variable_annuity_withdrawal_form.pdfIn PDF document text
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_f9bc166a608349ff8e76d211b086277d.pdf?index=trueIn PDF document text
    • http://xawiwevivuzox.onlinewebshop.net/arcmap_basic_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b020c6aa-25e8-4f09-8fd2-2958ccd62be8/falling_upwards_how_we_took_to_the_air_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ddf3113-77bd-4b6a-bbcb-68f55de99c23/que_significa_la_sabiduria_en_la_biblia.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/60343243492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/219a85f7-ff8e-4460-bc0d-58d63d4a7b26/how_to_program_my_defiant_electronic_deadbolt.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/leloruwizegugenowanitab.pdfIn PDF document text
    • https://2cc12256-1025-444a-bacb-901a9f007bda.filesusr.com/ugd/d1fcfc_36ea9a22e99c484998d2dafdcee19fa6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/922fca9d-3e92-4c3f-bc45-5e52c73eb449/virginia_woolf_orlando_book.pdfIn PDF document text
    • http://sajomapujozokux.onlinewebshop.net/albuminuria_creatinina.pdfIn PDF document text
    • https://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_77d1c39897f84b44a70ecab9b1b701c7.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_off0000f286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF286 5068 bytes
SHA-256: a39c2422f7e9bee8ad1dd50fdbbbf32aab3415d363846ece72406b5ecfadc169
font_01_sfnt_off000103be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103BE 10996 bytes
SHA-256: af1d5821a198cdda12cb2fa504f297109a79b48b4714c743fc99b9326e6b339b